сontains only T lymphocytes

is supplied only with blood, not lymph

lymphocytes (mainly T cells) surround the arterioles, forming a cuff or so-called periarteriolar lymphoid membranes

a relatively large unpaired organ weighing about 150 g

the accumulation of lymphocytes around the branches emerging from the trabecular artery constitutes the B-cell zone

found in organized lymphoid tissue of the mucous membranes

constitute about 10-50% of intraepithelial lymphocytes

express HML-1 molecules on their surface

they are scattered among epithelial cells

classified as T-lymphocytes

rubor

numbness

tenderness

necrosis

swelling

calor

sepsis

the immune system recognizes foreign (foreign) and directs specific immune responses to neutralize and eliminate it

adaptive immunity is supported by and integrated into other defense systems of a multicellular organism

main natural function is protection against infections

immunity can be innate or acquired

adaptive immunity is capable of fine tuning

a physiological form of the body’s reactivity to an immunogen, observed when cells of the immune system come into contact with antigenic structures

the body reactions that provide immunobiological protection from foreign antigens

the body's sensitivity to bacteria, viruses, rickettsia, parasites, etc.

dendritic cells

monocytes

mast cells

basophils

macrophages