BIOL 115 Lecture Notes - Lecture 17: Natural Killer Cell, Eosin, Leukopoiesis
Document Summary
Eosin stain -> acidic, red (anything that picks it up is pink/red) Anywhere from 3-5 lobes in nucleus, the more the older. Attack parasitic worms too large to be engulfed by phagocytosis. Granules are full of enzymes, proteins, etc. that destroy ^ Basophils -> affinity for basic stain (alkaline, blue) 0. 5-1% of wbcs. Small % is good since they release histamine, which is a vasodilator (opens up lumen so blood flow increases) Tumor cells & transplants (immunosuppression usually was to be taken, or else cells will attack & destroy transplanted tissue) Natural killer (nk) cells: act on spontaneous tumor cells. Help recognize & destroy not many, so some slip past surveillance. The more invaders, the more easily slip past because of being overwhelmed. Some can trick immune cells to attack our own cells rather than foreign ones. B-cells: give rise to plasma cells, which produce antibodies. Produce macrophages (can digest bacteria encountered & cellular debris)
