After infection of germs,the immunity acquired is:

Which of the following cells act as phagocytes?

Perforin is secreted by which of the following cells to prevent the effect of microbes?

Arrange the steps of the $phagocytosis$ process in the correct sequence.
$(a)$ Ingestion of microbes by phagocytes
$(b)$ Dilation of blood vessels by histamine
$(c)$ Formation of $phagosome$ and $phagolysosome$
$(d)$ Migration of phagocytes into $E.C.F.$
$(e)$ Attraction of phagocytes by $chemotoxins$ secreted by microbes
$(f)$ Intracellular destruction of bacteria

Define the following terms: Allergy and Cell-mediated immunity.

Which of the following cells are associated with the immune system of the body?