When pre-formed antibodies are injected into the body,it is called .........

Which of the following occurs in innate immunity?

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

Which cells are involved in the immune response?

Transfer of antibodies from mother to infant through colostrum after birth provides . . . . . . to the baby.

Select the lymphoid organs from the given choices:
$I$. Lymph node $II$. Thymus gland
$III$. Red bone marrow $IV$. Liver
$V$. Spleen $VI$. Osteocytes
$VII$. Peyer's patches
The correct option is: