Immediately, the pathogen has been recognized:
Macrophages acts as the first line of defence by engulfing pathogens identified by antigens which will now present the antibody shape to a helper T cell.
The Helper T cells produce a signal to plasma and Memory B cells to yield antibodies that attach to the antigens. The cytotoxic cells that leads to cell death are activated by the helper T cells.
Antibodies helps to immobilize pathogen for macrophage to feed on.
if the pathogen comes back a 2nd time the memory cells helps in quick and efficient recovery by producing the specific B and T cells for the antigen.
Answer:
all of them
Explanation:
because it is all of them
Heterosporous <span>is a condition in which plants produce separate male and female gametophytes.</span>
Osteoporosis affects the the skeleton whereby the bones become brittle and fragile as a result of deficiency in vital nutrients such as calcium and vitamin D
