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Primary immune response. When an antigen enters the body for the first time, the small numbers of B-lymphocytes with receptors complementary to that antigen are stimulated to divide by mitosis. This is known as clonal selection.
17 sty 2022 · In brief, when B and T-cells replicate during the primary immune response, they produce effector cells and long-lived memory cells. Memory B and T-cells are antigen-specific and, on encountering the antigen again, can mount a more rapid and effective immune response, known as the secondary immune response.
20 sie 2018 · The structures of the cell discussed include the plasma membrane, nucleus, cytoplasm, ribosomes, endoplasmic reticulum, Golgi apparatus, mitochondria, lysosomes, peroxisomes, and cytoskeleton. Each structure performs important functions essential for cellular activities.
Mitosis is the process of nuclear division by which two genetically identical daughter nuclei are produced that are also genetically identical to the parent nucleus. The process of mitosis is of great biological significance and is fundamental to many biological processes: Growth of multicellular organisms.
5 lut 2010 · During an immune response, B-lymphocytes form two types of cell: plasma cells and memory cells; Memory cells form the basis of immunological memory – the cells can last for many years and often a lifetime; There are two types of immune response: Primary immune response (responding to a newly encountered antigen)
31 lip 2022 · A memory cell is an antigen-specific B or T lymphocyte that does not differentiate into effector cells during the primary immune response, but that can immediately become effector cells upon re-exposure to the same pathogen. During the primary immune response, memory cells do not respond to antigens and do not contribute to host defenses.
2 lut 2023 · The process of mitosis and its phases explained with steps in order. Learn its meaning, functions, & importance with examples & labeled picture
