Which of the following stimulates the production of blood cells in red bone marrow and of lymphocytes in lymphoid tissues and organs?
Which of the following occurs in exocrine secretions and functions to attack pathogens before they enter body tissues?
The ________ form the base of a typical antibody molecule.
A)variable segments of the heavy chains
B)constant segments of the light chains
C)variable segments of the light chains
D)constant segments of the heavy chains
E)constant and variable segments of the light and heavy chains
The clumping of red blood cells, which occurs when incompatible blood types are mixed, is an example of