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  2. CCR5 - Wikipedia

    en.wikipedia.org/wiki/CCR5

    C-C chemokine receptor type 5, also known as CCR5 or CD195, is a protein on the surface of white blood cells that is involved in the immune system as it acts as a receptor for chemokines. [ 5 ] In humans, the CCR5 gene that encodes the CCR5 protein is located on the short (p) arm at position 21 on chromosome 3 .

  3. Lymphokine - Wikipedia

    en.wikipedia.org/wiki/Lymphokine

    Lymphokines have many roles, including the attraction of other immune cells, including macrophages and other lymphocytes, to an infected site and their subsequent activation to prepare them to mount an immune response. Circulating lymphocytes can detect a very small concentration of lymphokine and then move up the concentration gradient towards ...

  4. CD4+/CD8+ ratio - Wikipedia

    en.wikipedia.org/wiki/CD4+/CD8+_ratio

    In COVID-19 B cell, natural killer cell, and total lymphocyte counts decline, but both CD4 + and CD8 + cells decline to a far greater extent. [12] Low CD4 + predicted greater likelihood of intensive care unit admission, and CD4 + cell count was the only parameter that predicted length of time for viral RNA clearance.

  5. Lymphopoiesis - Wikipedia

    en.wikipedia.org/wiki/Lymphopoiesis

    Although lymphocytes are usually considered mature, as seen in blood tests, they are certainly not inert. Lymphocytes can travel around the body wherever there is a need. When such needs arise, new rounds of downstream lymphopoiesis, such as cell multiplication and differentiation, may occur, accompanied by intense mitotic and metabolic activity.

  6. Clonal selection - Wikipedia

    en.wikipedia.org/wiki/Clonal_selection

    Clonal selection theory of lymphocytes: 1) A hematopoietic stem cell undergoes differentiation and genetic rearrangement to produce 2) immature lymphocytes with many different antigen receptors. Those that bind to 3) antigens from the body's own tissues are destroyed, while the rest mature into 4) inactive lymphocytes.

  7. Naive T cell - Wikipedia

    en.wikipedia.org/wiki/Naive_T_cell

    In turn, this results in the T cell acquiring an activated phenotype seen by the up-regulation of surface markers CD25 +, CD44 +, CD62L low, CD69 + and may further differentiate into a memory T cell. Having adequate numbers of naive T cells is essential for the immune system to continuously respond to unfamiliar pathogens.

  8. Lymphocytopenia - Wikipedia

    en.wikipedia.org/wiki/Lymphocytopenia

    Lymphocytopenia is commonly caused by a recent infection, such as the common cold or COVID-19. [3]Lymphocytopenia, but not idiopathic CD4+ lymphocytopenia, is associated with corticosteroid use, infections with HIV and other viral, bacterial, and fungal agents, malnutrition, systemic lupus erythematosus, [4] severe stress, [5] intense or prolonged physical exercise (due to cortisol release ...

  9. Interleukin 10 - Wikipedia

    en.wikipedia.org/wiki/Interleukin_10

    3586 16153 Ensembl ENSG00000136634 ENSMUSG00000016529 UniProt P22301 P18893 RefSeq (mRNA) NM_000572 NM_010548 RefSeq (protein) NP_000563 NP_034678 Location (UCSC) Chr 1: 206.77 – 206.77 Mb Chr 1: 130.95 – 130.95 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Interleukin 10 (IL-10), also known as human cytokine synthesis inhibitory factor (CSIF), is an anti- inflammatory cytokine ...