Which of the following components are included as antibodies?

Which of the following cannot be included in passive acquired immunity?

The $D.P.T$ vaccine is an example of which type of immunity?

Which is the main physical barrier in our body?

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

Antigen binding site is present in