The Cellular Biology ClipArt gallery offers 240 illustrations of biology at the cellular level for many species and parts of the body, including blood cells and bone tissue, and also contains general images of cell, cell structure, and cell reproduction.

From a section of the lung of a cat, stained with silver nitrate. Labels: A. D., alveolar duct or intercellular passage; S, alveolar septa; N, alveoli or air cells, lined with large flat, nucleated cells, with some smaller polyhedral nucleated cells; M, Unstriped muscular fibers. Circular muscular fibers are seem surrounding the interior of the alveolar duct, and at one part is seen a group of small polyhedral cells continued from the bronchus.

Air Cells from a Cat's Lung

From a section of the lung of a cat, stained with silver nitrate. Labels: A. D., alveolar duct or intercellular…

Terminal branch of a bronchial tube, with its infundibula and air cells from the margin of the lung of a monkey, injected with quicksilver. Labels: a, terminal bronchial twig; b, infundibula and air cells.

Air Cells of a Monkey

Terminal branch of a bronchial tube, with its infundibula and air cells from the margin of the lung…

The amoeba is a one-celled animal in the Kingdom Protista. This is image 2 of phagocytosis.

Amoeba

The amoeba is a one-celled animal in the Kingdom Protista. This is image 2 of phagocytosis.

Amoeba are one-celled organisms of the Kingdom Protista

Amoeba

Amoeba are one-celled organisms of the Kingdom Protista

"Protozoa, common in all fresh water ponds and ditches."-Whitney, 1902

Amoeba

"Protozoa, common in all fresh water ponds and ditches."-Whitney, 1902

"Diagram showing an amoeba in successive stages of division." — Blaisedell, 1904

Amoeba

"Diagram showing an amoeba in successive stages of division." — Blaisedell, 1904

The streaming of Protoplasm in the Amoeba. The forward motion of the granules takes place more rapidly in the centre of the pseudopodium (p). Those at the margin fall behind those in the centre as the pseudopodium advances.

Amoeba

The streaming of Protoplasm in the Amoeba. The forward motion of the granules takes place more rapidly…

Amoeba showing formation of two animals from one by fission.

Amoeba

Amoeba showing formation of two animals from one by fission.

A single celled organism that is one of the building blocks of life.

Amoeba

A single celled organism that is one of the building blocks of life.

An amoeba expanding in size from cellular absorption.

Amoeba

An amoeba expanding in size from cellular absorption.

An amoeba multiplying by way of simple fission

Amoeba

An amoeba multiplying by way of simple fission

multiple amoebas

Amoeba

multiple amoebas

An illustration of an amoeba: n, nucleus.

Amoeba

An illustration of an amoeba: n, nucleus.

An illustration of an amoeba: n, nucleus.

Amoeba

An illustration of an amoeba: n, nucleus.

An illustration of an amoeba: n, nucleus.

Amoeba

An illustration of an amoeba: n, nucleus.

An illustration of an amoeba: n, nucleus; cv, contractile vacuole.

Amoeba

An illustration of an amoeba: n, nucleus; cv, contractile vacuole.

Amoung the simplest one-celled animals living in the ooze at the bottom of nearly every freshwater stream or pond is the Amoeba, whose body is barely visible to the unaided eye. Here we see the amoeba, highly magnified, showing(c.v.) pulsating vacuole; (f) food particle; (n) nucleus. (7B) The shape of the same individual 30 seconds later.

Amoeba

Amoung the simplest one-celled animals living in the ooze at the bottom of nearly every freshwater stream…

Difflugia one of several genera of amoebozoa that produce shells or tests from granules of sand. These are swallowed by the cell and during the process of budding or fission they pass into the daughter, where they are joined by organic cement. The test has a single terminal opening. Difflugia are particularly common in marshes. The Difflugia use pseudopods to move around. It is a heterotroph and it engulfs its food.

Amoeba

Difflugia one of several genera of amoebozoa that produce shells or tests from granules of sand. These…

The amoeba in the process of division

Amoeba

The amoeba in the process of division

Gromia is a widespread genus of marine and freshwater amoeboids, closely resembling some foraminiferans.

Amoeba

Gromia is a widespread genus of marine and freshwater amoeboids, closely resembling some foraminiferans.

"Direct cell division (Amoeba). A, active specimen with pseudopodia; B, becoming spherical preliminary to division; C, beginning of elongation and constriction; D, later stage; E, daughter cells forming pseudopodia. ec, clear ectoplasm; en, granular endoplasm; f, food vacuole; n, nucleus; ps, pseudopodium; v, pulsating vacuole." -Galloway, 1915

Amoeba Cell Division

"Direct cell division (Amoeba). A, active specimen with pseudopodia; B, becoming spherical preliminary…

"These little creatures frequently have the appearance of small, rounded masses, like drops of water. They are naked, without any apparent organization."

Amoeba Princeps (Ehrenberg)

"These little creatures frequently have the appearance of small, rounded masses, like drops of water.…

Amoeboids are unicellular life-forms characterized by their similarity to amoebas.

Amoeboid

Amoeboids are unicellular life-forms characterized by their similarity to amoebas.

The Antheridium is the male organ of plants. Within it are produced the sperms or their equivalents, which fertilize the female cells or eggs.

Section through Antheridium of Liverwort

The Antheridium is the male organ of plants. Within it are produced the sperms or their equivalents,…

Subcutaneous areolar tissue from a young rabbit, highly magnified. The white fibers are in wavy bundles, the elastic fibers form an open network. Labels: p, p, vacuolated cells; g, granular cells; c, c, branching lamellar cells; c', a flattened cells, of which only the nucleus and some scattered granules are visible; f, fibrillated cell."If we make a cut through the skin of some part of the body where there is no subcutaneous fat, as in the upper eyelid, and proceed to raise it from the parts lying beneath, we observe that it is loosely connected to them by a soft filmy substance of considerable tenacity and elasticity. This is areolar tissue. It is also found, in like manner, under the serous and mucous membranes, and serves to attach them to the parts which they line or cover. Proceeding further, we find this areolar tissue lying between the muscles, the blood-vessels, and other deep-seated parts; also forming investing sheaths for the muscles, the nerves, the blood-vessels, and other parts. It both connects and insulates entire organs, and, in addition, performs the same office for the finer parts of which these organs are made up. It is thus one of the most general and most extensively distributed of the tissues." —Kimber, 1907

Subcutaneous Areolar Tissue from a Young Rabbit

Subcutaneous areolar tissue from a young rabbit, highly magnified. The white fibers are in wavy bundles,…

"Bacilli, or Rod-Shaped Bacteria. From a culture obtained in antharax, or malignant pustule, of the face. Diseased hides carry this micro-organism and thus may occaision this fatal disease among those who handle hides and wool." — Blaisedell, 1904

Bacilli

"Bacilli, or Rod-Shaped Bacteria. From a culture obtained in antharax, or malignant pustule, of the…

"A. Bacilli mingled with blood corpuscules from the blood of a guinea-pig; some of the bacilli dividing. B. The rodlets after three hours' culture in a drop of aqueos huor. They grow out into long leptothrix-like filaments, which become separate later, and spores are developed in the segments." — Encyclopedia Britannica, 1910

Bacillis Anthracis

"A. Bacilli mingled with blood corpuscules from the blood of a guinea-pig; some of the bacilli dividing.…

"a, a chain of motile rodlets still growing and dividing (bacilli). b, a pair of bacilli actively growing and dividing. p, a rodlet in this condition (but divided into four segments) after treatment with alcoholic iodine solution. c, d, e, f, successive stages in the development of the spores. r, a rodlet segmented in four, each segment containing one ripe spore. g2, g3, early stages in the germination of the spores (after being dried for several days); h1, h2, i, k, l and m, successive stages i, the germination of the spore." — Encyclopedia Britannica, 1910

Bacillus Megaterium

"a, a chain of motile rodlets still growing and dividing (bacilli). b, a pair of bacilli actively growing…

"Different Kinds of Milk Bacteria. It is not uncommon for a large number of person to be poisoned from eating ice cream at some public gathering. This is caused by a change in the milk brought about by the presence of bacteria. The poisonous product of their action called "tyrotoxicon", may also be found in other foods which have milk as their basis, such as cheese, custard, and so on. There are vomiting and purging within a few hours after eating the food, succeeded by a great nervous prostration, from which recovery follows slowly." — Blaisedell, 1904

Milk bacteria

"Different Kinds of Milk Bacteria. It is not uncommon for a large number of person to be poisoned from…

"Epidermis of the garden Balsam, showing stomata st, of an elliptical form." — Encyclopedia Britanica, 1893

Balsam

"Epidermis of the garden Balsam, showing stomata st, of an elliptical form." — Encyclopedia Britanica,…

"Cells of Beet-root, containing conglomerate crystals." — Encyclopedia Britanica, 1893

Beet-root

"Cells of Beet-root, containing conglomerate crystals." — Encyclopedia Britanica, 1893

Vertical section of area pellucida and area opaca (left extremity of figure) of blastoderm of a fresh laid egg (unincubated). Labels: S, superficial layer corresponding to epiblast; D, deeper layer, corresponding to hypoblast; and probably in part to mesoblast; M, large "formative cells," filled with yolk granules, and lying on the floor of the segmentation cavity; A, the white yolk immediately underlying the segmentation cavity.

Blastoderm of an Egg

Vertical section of area pellucida and area opaca (left extremity of figure) of blastoderm of a fresh…

Red and white corpuscles (cells) of the blood, magnified. Labels: A, moderately magnified, the red corpuscles are seen in rouleaux; a, a, white corpuscles; B, C, D, red corpuscles, highly magnified, seen in different positions; E, a red corpuscle swollen in to a sphere by absorption of water; F, G, white corpuscles, highly magnified; K, white corpuscle treated with acetic acid; H, I, red corpuscles wrinkled or crenated.

Red and White Blood Cells

Red and white corpuscles (cells) of the blood, magnified. Labels: A, moderately magnified, the red corpuscles…

Blood corpuscles. Labels: A, magnified about 400 diameters. The red corpuscles have arranged themselves in rouleaux; a, a, colorless corpuscles; B, red corpuscles more magnified and seen in focus; E, a red corpuscle slightly out of focus. Near the right-hand top corner is a red corpuscle seen in three-quarter face, and at C one seen edgewise. F,G,kH,I, white corpuscles highly magnified.

Blood Cells

Blood corpuscles. Labels: A, magnified about 400 diameters. The red corpuscles have arranged themselves…

Red corpuscles (blood cells) of the frog. The red blood cells of birds, reptiles, amphibians and fishes are oval and contain a nucleus in the center that is not found in human red corpuscles.

Blood Cells

Red corpuscles (blood cells) of the frog. The red blood cells of birds, reptiles, amphibians and fishes…

White blood corpuscle (cell), sketched at successive intervals of a few seconds to illustrate the changes of form due to its amoeboid movements.

Blood Cells

White blood corpuscle (cell), sketched at successive intervals of a few seconds to illustrate the changes…

Red and white blood corpuscles (cells).

Red and White Blood Cells

Red and white blood corpuscles (cells).

"Blood corpuscles (human). c, colored; l, leucocytes. The red cells tend to collect in rows with the sides in contact." — Galloway

Blood Corpuscles

"Blood corpuscles (human). c, colored; l, leucocytes. The red cells tend to collect in rows with the…

"Red and white blood corpuscles." — Richardson, 1906

Blood Corpuscles

"Red and white blood corpuscles." — Richardson, 1906

Blood corpuscles (cells). Labels: A, magnified about 400 diameters. The red corpuscles have arranged themselves in rouleaux; a, a, colorless corpuscle; B, red corpuscles more magnified and seen in focus; E, a red corpuscle slightly out of focus. Near the right -hand top corner is a red corpuscle seen in three-quarter face, and at C one is seen edgewise. F, G, H, I, white corpuscles highly magnified.

Blood Corpuscles

Blood corpuscles (cells). Labels: A, magnified about 400 diameters. The red corpuscles have arranged…

Human red blood corpuscles. Highly magnified.

Blood Corpuscles

Human red blood corpuscles. Highly magnified.

A, Three colored blood corpuscles. B, Three colorless blood corpuscles acted on by acetic acid; the nuclei are very clearly visible.

Colorless and Colored Blood Corpuscles

A, Three colored blood corpuscles. B, Three colorless blood corpuscles acted on by acetic acid; the…

The intracellular network of colorless and colored blood corpuscles. Labels: A, The colorless blood corpuscles showing the intracellular network, and two nuclei with intranuclear network. B. Colored blood corpuscle showing the intracellular network of fibrils.

Intracellular Network of Blood Corpuscles

The intracellular network of colorless and colored blood corpuscles. Labels: A, The colorless blood…

Transverse section through the tibia of a fetal kitten. Labels: P, Periosteum. O, Osteogenetic layer of periosteum showing the osteoblasts newly formed bones. B, the periosteal bone deposited in successive layers beneath the periosteum and ensheathing E, the spongy endochondral bone; represented as more deeply shaded. Within the trabeculae of endochondral spongy bone are seen the medulla, with V, veins. In the lower half of the figure the endochondral spongy bone has been completely absorbed.

Formation of Compact Bone in a Kitten

Transverse section through the tibia of a fetal kitten. Labels: P, Periosteum. O, Osteogenetic layer…

Transverse section of compact tissue of humerus, magnified about 150 diameters. Three of the Haversian canals are seen, with their concentric rings faintly indicated; also the lacunae, with the canaliculi extending from them across the direction of the encircling lamellae, or concentric rings.

Bone Tissue of Humerus

Transverse section of compact tissue of humerus, magnified about 150 diameters. Three of the Haversian…

"Portion of a cross section through a nectariferous bract of Vicia sepium; n, nectar-secreting cells." -Stevens, 1916

V. Sepium Bract

"Portion of a cross section through a nectariferous bract of Vicia sepium; n, nectar-secreting cells."…

The walls of capillaries are composed of a single layer of elongated or radiate, flattened and nucleated cells, so joined and dovetailed together as to form a continuous transparent membrane.

Capillaries Showing Nucleated Endothelial Membrane

The walls of capillaries are composed of a single layer of elongated or radiate, flattened and nucleated…

The form of the capillary network presents considerable variety in the different textures of the body: the varieties consists principally of modifications of two chief kind of mesh, the rounded and the elongated. The kind in which the meshes or interspaces have a roundish form is the most common, and prevails in those parts which the capillary network is most dense, such as the lungs. Shown is the network of capillary vessels of the air cells of the horse's lung magnified. Labels: a, capillaries proceeding from b, terminal branched of the pulmonary artery.

Capillary Vessels of Air Cells

The form of the capillary network presents considerable variety in the different textures of the body:…

A thin slice of cartilage, magnified, to how the cells embedded in the homogenous matrix. Labels: a, cell in which the nucleus has divided; b, a cell in which division is just complete; c, e, a group of four cells resulting from further division of a pair like b; the new cells have formed some matrix between them, separating them from another; d, d, cavities in the matrix from which cells have dropped out during the preparation of the specimen.

Cartilage Tissue Cells

A thin slice of cartilage, magnified, to how the cells embedded in the homogenous matrix. Labels: a,…

"In a general what we may describe a cell as a tiny mass of jelly in which floats another still smaller mass of slightly different composition, called the <em>nucleus</em> of the larger one."

Cell

"In a general what we may describe a cell as a tiny mass of jelly in which floats another still smaller…

Diagram showing the principal parts of the cell and something of the protoplasmic architecture as it might appear while living. a, alveoli or spheres in the foam-work; c, centrosome; cy, cytoplasmic meshwork, containing granules; nu., nucleus; n, nucleolus; v. vacuole; w, cell wall.

Cell

Diagram showing the principal parts of the cell and something of the protoplasmic architecture as it…

Every human body begin as a single nucleated cell. This cell, known as the ovum, divides or segments and gives rise to a mass consisting of a number of similar units known as the morula. At this stage there are no distinguishable tissues.

Cell Development

Every human body begin as a single nucleated cell. This cell, known as the ovum, divides or segments…

Diagram showing the change which occur in the centrosomes and nucleus of a cell n the process of mitotic division (mitosis). The nucleus represented here has 4 chromosomes.

Cell Division

Diagram showing the change which occur in the centrosomes and nucleus of a cell n the process of mitotic…

"Diagram of cell division. chr., Chromosomes forming an equatorial plate; cs., centrosome." -Thomson, 1916

Cell Division

"Diagram of cell division. chr., Chromosomes forming an equatorial plate; cs., centrosome." -Thomson,…

Indirect division of a cell (karyokinesis). Labels: 1, nesting cell; 2, cell preparing to divide-two centrosomes; 3, filaments of the fibers of the nucleus have been formed into what is known as the spindle; 4, spindle has been separated; 5, nuclear material had been separated; 6, cell has divided.

Process of Cell Division

Indirect division of a cell (karyokinesis). Labels: 1, nesting cell; 2, cell preparing to divide-two…

"Diagram showing the principal parts of the cell as it appeaers when killed and stained. The protoplasm shows more of a meshwork (cy), the spaces representing the alveoli. f, formed substance in alveoli." -Galloway, 1915

Cell Parts

"Diagram showing the principal parts of the cell as it appeaers when killed and stained. The protoplasm…

Modes of cell reproduction. A, B, and C, stages in the reproduction of the Infusorian, Colpoda, by the breaking up of the protoplasm to form numerous cells. A, encysted stage; B, protoplasm escaping, spores partly formed; C, spores completely separated; D, budding in Chlamydomyxa, a lowly Rhizopod. b, bud; cw., cell wall; m, mother cell; n, nuclear matter; s, spores.

Cell Reproduction

Modes of cell reproduction. A, B, and C, stages in the reproduction of the Infusorian, Colpoda, by the…

"Diagram of cell structure. Pl. Plastids in cytoplasm. cc. Centrosome. n. Nucleolus. Chr. Chromosomes. N. Nucleus. ct. General cytoplasm. V. Vacuole. Gr. Granules." -Thomson, 1916

Cell Structure

"Diagram of cell structure. Pl. Plastids in cytoplasm. cc. Centrosome. n. Nucleolus. Chr. Chromosomes.…

A cell with its reticulum disposed radically; from the intestinal epithelium in a worm.

Cell with its Reticulum Disposed

A cell with its reticulum disposed radically; from the intestinal epithelium in a worm.

Diagram showing the structure of an animal cell.

Animal Cell

Diagram showing the structure of an animal cell.