#DEFINE MACRO MEDICAL TERM SKIN#

Macrophages also serve a vital role by processing antigens and presenting them to T cells, activating the specific immune response. Their placement in the peripheral lymphoid tissues enables macrophages to serve as the major scavengers of the blood, clearing it of abnormal or old cells and cellular debris as well as pathogenic organisms. They have the ability to recognize and ingest foreign antigens through receptors on the surface of their cell membranes these antigens are then destroyed by lysosomes. Along with neutrophils, macrophages are the major phagocytic cells of the immune system.

#DEFINE MACRO MEDICAL TERM SKIN#

They are also present in the brain as microglia, in the skin as Langerhans cells, in bone as osteoclasts, as well as in serous cavities and breast and placental tissue. About 50% of all macrophages are found in the liver as Kupffer cells. Macrophages are found in large quantities in the spleen, lymph nodes, alveoli, and tonsils. Large (15–80 µm in diameter), often with bleb-like or filiform pseudopodia one (or rarely more) round to oval, occasionally indented nucleus nuclear membrane is distinct nuclear chromatin is fine with a reticular pattern abundant, pale grey-blue, often granulated (coarse azurophilic granules) and vacuolated cytoplasm with phagocytosed material (RBCs, WBCs, platelets, nuclei, bacteria and remnants in native or degraded form).Ī monocyte that has left the circulation and settled and matured in a tissue. Macrophages are involved in secretion, immune interaction with T and B cells and provide lymphokine receptors once activated, macrophages are highly microbicidal and tumouricidal, often closely associated with the blood vessels, epithelium and mesothelium, which are appropriate sites for non-specific immunocytes. They may develop rashes under their breasts, and they may even be unable to.

They may have difficulty finding clothes that fit, and may require specialized sports bras with wide straps.

Girls with macromastia may have pain in their back, shoulders and neck. macrophage A nonspecific immune defence cell that interacts with proteins and polysaccharide antigens, internalising and partially degrading them, and/or presenting the antigens to T cells in a major histocompatibility complex (MHC) context. Macromastia, or abnormally large breasts, is a common condition among female teenagers. The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company.

Define macro medical term