Antigen binding site in an antibody is found between
two light chains
two heavy chains
one heavy and one light chain
either between two light chains or between one heavy and one light chain depending upon the nature of antigen
Acquired Immunity mediated by which of the following
Name the primary and secondary lymphoid organs.
The yellowish fluid "colostrum" secreted by mammary glands of mother during the initial days of lactation has abundant antibodies ($lgA$) to protect the infant. This type of immunity is called as
Given below the diagrammatic representation of lymph nodes
Label $A, B$ and $C$
The function of vaccine is the production and storage of