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  2. Lymphoblast - Wikipedia

    en.wikipedia.org/wiki/Lymphoblast

    The Chronic Lymphocytic Leukemia Research Consortium defines a lymphoblast as "A lymphocyte that has become larger after being stimulated by an antigen. Lymphoblasts look like immature lymphocytes, and were once thought to be precursor cells." [4] Commonly, when speaking about leukemia, "blast" is used as an abbreviation for lymphoblasts.

  3. Reactive lymphocyte - Wikipedia

    en.wikipedia.org/wiki/Reactive_lymphocyte

    Reactive lymphocyte surrounded by red blood cells. In immunology, reactive lymphocytes, variant lymphocytes, atypical lymphocytes, Downey cells or Türk cells are cytotoxic (CD8 +) lymphocytes that become large as a result of antigen stimulation. Typically, they can be more than 30 μm in diameter with varying size and shape.

  4. Nuclear–cytoplasmic ratio - Wikipedia

    en.wikipedia.org/wiki/Nuclear–cytoplasmic_ratio

    For example, "blast" forms of erythrocytes, leukocytes, and megakaryocytes start with an N:C ratio of 4:1, which decreases as they mature to 2:1 or even 1:1 (with exceptions for mature thrombocytes and erythrocytes, which are anuclear cells, and mature lymphocytes, which only decrease to a 3:1 ratio and often retain the original 4:1 ratio). [1]

  5. White blood cell differential - Wikipedia

    en.wikipedia.org/wiki/White_blood_cell_differential

    A white blood cell differential is a medical laboratory test that provides information about the types and amounts of white blood cells in a person's blood. The test, which is usually ordered as part of a complete blood count (CBC), measures the amounts of the five normal white blood cell types – neutrophils, lymphocytes, monocytes, eosinophils and basophils – as well as abnormal cell ...

  6. Atypical chronic myeloid leukaemia, BCR-ABL1―negative ... Myelodysplastic syndrome with excess blasts ... Monoclonal B-cell lymphocytosis, non-CLL-type ...

  7. Lymphocyte - Wikipedia

    en.wikipedia.org/wiki/Lymphocyte

    A lymphocyte is a type of white blood cell (leukocyte) in the immune system of most vertebrates. [1] Lymphocytes include T cells (for cell-mediated and cytotoxic adaptive immunity), B cells (for humoral, antibody-driven adaptive immunity), [2] [3] and innate lymphoid cells (ILCs; "innate T cell-like" cells involved in mucosal immunity and homeostasis), of which natural killer cells are an ...

  8. Chronic lymphocytic leukemia - Wikipedia

    en.wikipedia.org/wiki/Chronic_lymphocytic_leukemia

    Most often the lymphocyte count is greater than 5000 cells per microliter (μL) of blood but can be much higher. [13] The presence of lymphocytosis in a person who is elderly should raise strong suspicion for CLL, and a confirmatory diagnostic test, in particular flow cytometry, should be performed unless clinically unnecessary. [37]

  9. Biphenotypic acute leukaemia - Wikipedia

    en.wikipedia.org/wiki/Biphenotypic_acute_leukaemia

    For t(15;17), the blasts with morphology of acute lymphoblastic leukemia co-expressed in B-lymphoid and myeloid lineages, and the cytogenetic study showed that the 4q21 abnormalities and t(15;17). However, promyelocytic-retinoid acid receptor rearrangement was not found by fluorescence in situ hybridization on interphase nuclei.