Answer 1

T lymphocytes	B lymphocytes
Originate in the bone marrow and mature in the thymus.	They are born and also mature in the bone marrow.
T cells multiply and differentiate into helper, regulatory, or cytotoxic T cells or become memory T cells.	B lymphocyte differentiates into a plasma cell, which secretes immunoglobulin.
T cells are involved in cell-mediated immunity	B cells are primarily responsible for humoral immunity (relating to antibodies).