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An axillary node is a lymph node of the upper extremity. Shown is the scheme of the axillary nodes. The dotted line indicates the position of the clavicle.

Lymph Node of Upper Extremity

An axillary node is a lymph node of the upper extremity. Shown is the scheme of the axillary nodes.…

A lymph node with its afferent and efferent vessels.

Vessels of a Lymph Node

A lymph node with its afferent and efferent vessels.

Diagrammatic section of lymphatic gland. Labels: a.l., afferent lymphatic; e.l., efferent lymphatic; c, capsule, or envelope; tr, trabeculae; l.s., lymph-sinus; l.h., pulpy substance of gland.

Diagrammatic Section of a Lymphatic Gland (Lymph Node)

Diagrammatic section of lymphatic gland. Labels: a.l., afferent lymphatic; e.l., efferent lymphatic;…

Vertical section of a portion of a Peyer's Patch, with lacteal vessels injected. Labels: a, villi, with their lacteals colored black; d, surface of rounded follicle, or solitary gland; e, central part; f,g,h,i, and k, lymph-channels, or lacteal vessels, colored black. "Closely connected with the lymphatic vessels in the intestines are small, rounded bodies of the size of a small pin's head, called solitary glands or follicles. These bodies consist of a rounded mass of fine lymphoid tissue, the meshes of which are crowded with leucocytes. A Peyer's patch, or agminated gland, as it is often called, is simply a collection of these follicles."— Kimber, 1907

Peyer's Patch

Vertical section of a portion of a Peyer's Patch, with lacteal vessels injected. Labels: a, villi, with…