$R.B.C.$ in adult are formed
In the bone marrow of long bones
In the spleen
In the thymus
In the liver
Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain
Antigen binding site in an antibody is found between
$A$ : Colostrum is a very efficient means of transferring immunity to a newborn.
$R$ : IgM from mother’s milk protects the baby from the respiratory infection usually affecting in young age.
The term ’active immunity' means
Acquired Immunity mediated by which of the following