t cell lymphoma
B lymphocyte (B Cell)
Individuals with both B-cell and T-cell deficiencies are said to have severe combined immune deficiency (SCID).
Helper T cell
The first contact of a T or B cell with its specific antigen is called priming. It causes differentiation into effector T or B cells.
suppressor T-cells
Thymus Lymphocytes could be roughly divided into two categories. B cell and T cell. Though they both originate from the bone marrow, T cell migrate to the" thymus," where it reach maturity while B cell got mature in the bone. That is, T stands for thymus. However, B doesn't mean "bone" actually, for B cell was first discovered in the "bursa of Fabricius" in a bird.
Where it is produced
Chemical messages called cytokines that are released by the t cell. These cytokines activate transcription factors that induce B cell proliferation.
Well firstly an antigen presenting cell like dendritic cell or macrophage is needed. Secondly you also need a T cell that is complementary to the B cell. B cell will only become plasma cell when it receives the full signal 1. Stimuli: CD4 from T cell interacting with BcR/antigen complex on B cell 2. Co-stimuli: CD40L (CD154) on T cell interacting with CD40 on B cell This interaction allows T cell to secrete IL4, this binds to IL4R on B cell thus receive signal for proliferating and differentiating.
B cells mark the virus or paracite as unknown the killer t cells attack and destroy the virus.
Activated helper T cell will multiply and become either TH1 or TH2. TH2 is the one that activates the B cell population