There are two types of T cells which involved in the specific immunity. One type is cytotoxic T cell or killer T cell. In this case when pathogen enter the cell, and that cell moves the protein to its surface, a patrolling T cell recognizes and binds to this protein and release profferrin, a protein which raptures a membrane of the infected cell. T cell can destroy a cancer cell.The second type of T cell is helper T cell. The role of helper T cell is to activate B cell. The B cell that responses has the same antigen that activates the helper T cells. The T cell sends out chemical signals that effect various immune cells. These chemicals stimulate B cells to divide and produce a clone of antibody releasing cells.
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Yes, the importance of B cells and T cells is obvious. You explained the role of these cells and I just want to add the definitins of them.
ReplyDeleteThese are lymphocytes(type of white blood cells). According to the integral surface proteins present in each lymphocyte's membrane they are divided into B cells and T cells.
B cells derived from stem cells in bone marrow, while T cells mature in the thymus, located in the chest above the heart.