What are the two classes of Lymphocytes ?

Write any three differences between two classes of lymphocytes.

Name the two special types of lymphocytes in humans. How do they differ in their roles in immune response?

What are two types of lymphocytes?

What are different classes of enzymes? Explain any two with type of reaction they catalyse.

Name three types of T-lymphocytes.

Name the four classes of pteridophytes.

Give the function of lymphocytes.

What is the site of differentation of two types of lymphocytes?