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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…

Minute structure of a cell.

Cell, Diagram of

Minute structure of a cell.

"C, cell showing numerous chloroplasts scattered through the cytoplasm." -Stevens, 1916

Plant Cell

"C, cell showing numerous chloroplasts scattered through the cytoplasm." -Stevens, 1916

"Free cell formation of spores in the ascus of Erysiphe communis. A, ascus with single nucleus; C, cytoplasm; N, nucleus; NL, nucleolus; B, successive stages in nuclear division with the ascus; at X, early anaphase, nuclear membrane, NM, still persisting; R, kinoplasmic radiations from the poles; at Y, telophase, new nuclear membrane not yet formed; Z, a later stage where the nuclear membranes demark the daughter nuclei." -Stevens, 1916

E. Communis Cell

"Free cell formation of spores in the ascus of Erysiphe communis. A, ascus with single nucleus; C, cytoplasm;…

"Indirect or mitotic division; A, resting mother nucleus; B, coil stage, with the centrosomes separating; C, D (metaphase), and H, stages in the division of the chromosomes; F, diastroid (anaphase) stage; G and H show the return of the daughter nuclei to the coil and to the resting condition, and division of the cytoplasm, and the formation of the dividing wall: c, centrospheres; cl, chromatin coil; chr, chromosomes; nu., nucleus; n, nucleoius; sp, nuclear spindle; w, cell wall." — Galloway

Mitotic Division

"Indirect or mitotic division; A, resting mother nucleus; B, coil stage, with the centrosomes separating;…

"A, embryonic cells from onion root tip; d, plasmatic membrane; c, cytoplasm; a, nuclear membrane enclosing the thread-like nuclear reticulum; b, nucleolus; e, plastids (black dots scattered about)." -Stevens, 1916

Onion Cells

"A, embryonic cells from onion root tip; d, plasmatic membrane; c, cytoplasm; a, nuclear membrane enclosing…

"B, older (onion) cells farther back from the root tip. The cytoplasm is becoming vacuolate; f, vacuole." -Stevens, 1916

Onion Cells

"B, older (onion) cells farther back from the root tip. The cytoplasm is becoming vacuolate; f, vacuole."…

"Paramoecium caudatum. A, the living animal from the ventral aspect; B, the same in optical section: the arrow shows the course taken by food-particles; C, a specimen which has discharged its trichocysts; D, diagram of binary fission; buc. gr, buccal groove; cort, cortex; cu, cuticle; c. vac, vontractile vacuole; f. vac food vacuole; gul, gullet; med, medulla; nu, meganucleus; pa. nu, micronucleus; trch, trichocysts." -Parker, 1900

Paramoecium Caudatum

"Paramoecium caudatum. A, the living animal from the ventral aspect; B, the same in optical section:…

Second stage in plant cell division: Protophase 2; "the nuclear reticulum is assuming the form of a thickened thread, and the cytoplasm at opposite poles is becoming thread-like to form the spindle fibers." -Stevens, 1916

Plant Cell Division 2

Second stage in plant cell division: Protophase 2; "the nuclear reticulum is assuming the form of a…

In onion cells: "C, a cell from the epidermis of the mid-rib of Tradescantia zebrina, in its natural condition on the right, and plasmolyzed by salt solution on the left; g, space left by the recedence of the cytoplasm from the wall; the plasma membrane can now be seen as a delicate membrane bounding the shrunken protoplast." -Stevens, 1916

T. Zebrina Cell

In onion cells: "C, a cell from the epidermis of the mid-rib of Tradescantia zebrina, in its natural…