lacks_plasma_membrane_part has plasma membrane part mature B cell B-2 B cell B-2 B lymphocyte B2 B cell B2 B-cell B-2 B cells are reportedly CD48-positive, CD244-negative, and CD352-positive. B-2 B cells, also known as conventional B cells, play a critical role in the humoral immune response. They are distinguished from B-1 cells, which can respond more rapidly and broadly to antigens. B-2 B cells are typically generated in the bone marrow, where they become mature immunocompetent cells before transporting to secondary lymphoid organs like the spleen, lymph nodes, and Peyer's patches. Functionally, B-2 B cells are quintessential components of the adaptive immune system. They are responsible for producing high-affinity, isotype-switched antibodies in response to antigens. In contrast to B-1 B cells that produce natural, low-affinity antibodies, B-2 B cells undergo a meticulous process of affinity maturation and clonal selection upon activation. These cells are antigen-specific and require interaction with T helper cells for proper activation. When presented with the antigen, B-2 B cells internalize, process, and present it to T cells via major histocompatibility complex II (MHC II), leading to B cell proliferation and differentiation into plasma cells or memory B cells. Plasma cells generated from B-2 B cells secrete vast amounts of antibodies to neutralize the invading pathogen, offering immediate protection. On the other hand, memory B cells provide long-term immunity by maintaining recognition of the antigen and prompting a rapid and potent response upon reinfection. The versatile roles of B-2 B cells in the immune response make them key players in immunization and vaccine development. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.) B-2 B-cell B2 B-lymphocyte A conventional B cell subject to antigenic stimulation and dependent on T cell help and with a distinct surface marker expression pattern from B-1 B cells. These cells are CD43-negative. B2 cell B-2 B-lymphocyte B-0 B cell B2 B lymphocyte https://cellxgene.cziscience.com/cellguide/CL_0000822 membrane-spanning 4-domains subfamily A member 1 leukosialin