Answer:
Adaptive immune defense system consists of lymphocytes like B-lymphocytes and T- lymphocytes. B-lymphocytes provides humoral immunity while T- lymphocytes provide cell-mediated immunity to the body.
99% of lymphocytes circulate freely in the blood and lymph. B lymphocytes differentiate into plasma B cells and B memory cells when interact with antigen presented by T helper cells.
Then plasma cells secrete antibodies in the circulation which binds to extracellular antigens through antigen-binding site. Then the bounded antigen is recognized by receptors present on phagocytic cells. This receptor binds the Fc region of antigen bounded antibody and destroy the antigen by phagocytosis.
The smallest and most exclusive grouping category is species.
I believe it is a solution, sorry if wrong
A galaxy where mainly stars and planets form around one or more spiral arms. (usually more?)
Babies are made when the male and female go into sexual intercourse and when the male finally reaches its “peak” the sperm goes into the egg and fertilizes it. I hope this helps!!
