READ THIS POST AS A REVIEW, AND THEN GO TO THE LESSON PAGE: IMMUNE SYSTEM
What are the parts of the Immune System?
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Who are the Bad Guys? (pathogens)
B-cells: what do they do? When they are activated (by Helper T cells) they clone themselves into two kinds: first the plasma cell, which is a factory for antibodies, and also a memory cell (the diagram below should have antibodies on its membrane) which hang around a long time.
What do antibodies do?The antibodies, being released into the "humors" which are the bodily fluids or plasma, attach to the antigens, doing two things: first they prevent the virus from fusing with the cell membranes, and secondly, they flag the virus to be eaten by macrophages.
What is the Big Picture? Re-draw and memorize this.
NOW GO TO THE LESSON PAGE: IMMUNE SYSTEM
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