Page 189 - Atlas of Histology with Functional Correlations
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Are antigen-presenting cells to lymphocytes for immunologic response
Derived from circulating blood monocytes
Called Kupffer cells in liver, osteoclasts in bone, microglia in central nervous
system, Langerhans cells in skin, monocytes in blood, and osteoclasts in bone
Lymphocytes
Most numerous in loose connective tissue of respiratory and gastrointestinal
tracts
Produce antibodies to kill infecting cells
Plasma Cells
Characterized by chromatin distributed in radial pattern
Derived from B lymphocytes exposed to antigens
Produce antibodies to destroy specific antigens
Mast Cells
Closely associated with blood vessels
Found in skin, respiratory, and digestive system connective tissue
Ovoid cells with fine, regular basophilic granules
Release histamine and vasoactive chemicals when exposed to allergens,
causing immediate hypersensitivity allergic response
Contain also weak anticoagulant heparin
Neutrophils
Active phagocytes; engulf and destroy bacteria
Eosinophils
Increase after parasitic infestation
Phagocytize antigen–antibody complexes during allergic reactions
COLLAGEN FIBERS
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