In this text we will discuss one of the major components of acquired immunity.

Acquired immune responses are executed by two pathways.
These are as follows:
1. Humoral immunity
2. Cell mediated immunity

Basically, humours means body fluids; it involves production of antibodies against foreign antigens.
Antibodies are produced by B lymphocytes.
Antibodies are found in blood plasma, lymph, mucus etc and the surface of B cells & also mast cells and basophils.

Cells involved in humoral immune response includes:

CD4 cells 
B lymphocytes 
Plasma cells 
Memory B cells 

Criteria of humoral immunity:

Immunity by antibody production against exogenous antigens.
Then immunity against T dependent antigens which include...