(a) mounts a humoral immune response by producing antibodies. mounts a humoral immune response by producing antibodies. it is called
(b) a granulocyte, phagocyte and the most common white blood cell found in whole blood. it is called

The correct answer is: (a)  B lymphocyte; (b) neutrophil

Explanation:

(a) Lymphocyte is a type of leukocyte in the immune system of vertebrates.

The B lymphocytes are the lymphocytes which are responsible for the secretion of the antibodies and are a part of the humoral immunity component of adaptive immune system of the vertebrates.

(b) Neutrocytes, also called the neutrophils, are the phagocytes and the most common type granulocytes, and white blood cells, which are an important part of innate immune system.

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