The difference between T cells and B cells

1 and T cells participate in cellular immunity.

T lymphocytes (T cells for short) are lymphoid stem cells derived from bone marrow, which differentiate and mature in thymus, and then distribute to immune organs and tissues throughout the body through lymph and blood circulation to exert immune function.

2.b cells participate in humoral immunity.

Mature B cells of plasma cells (PC) can receive antigen stimulation in peripheral lymph nodes. With the help of th cells and antigen presenting cells, B cells can be activated, proliferated and differentiated into plasma cells that synthesize and secrete antibodies.

Second, the formation of differences.

1 and t cells are formed in thymus.

T lymphocytes are derived from pluripotent stem cells of bone marrow (from yolk sac and liver in embryo). In human embryo and primary stage, a part of pluripotent stem cells or pre-T cells in bone marrow migrated to thymus, differentiated and matured under the induction of thymosin, and became immunocompetent T cells.

2.b cells are formed in bone marrow.

B lymphocytes, referred to as B cells, are pluripotent stem cells derived from bone marrow. The progenitor cells of B lymphocytes exist in the hematopoietic cell island of fetal liver (embryonic mouse 14 days or normal children 8-9 weeks), and then the place where B lymphocytes are produced and differentiated is gradually replaced by bone marrow.

Third, the main functions are different.

The main function of 1 and T cells is to devour foreign invaders.

2. The main function of B cells is to produce various antibodies.

Fourth, the quantity and form are different.

The number of 1 and T cells is less than that of B cells.

2. The morphology of B cells is larger than that of T cells.

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