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28888A

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Image #   28888A
Name:   Granulocytes (neutrophils), T-lymphocytes, red blood cell
Copyright:   Copyright 2008 Dennis Kunkel Microscopy, Inc.
Description:   Caption: Granulocytic white blood cells (neutrophils), T-lymphocytes and a red blood cell. Granulocytes are leukocytes with granules in their cytoplasm that contain destructive chemicals. Neutrophils are involved in inflammation and other immune responses. They assist in cellular defense (phagocytosis) of pathogenic microorganisms. Neutrophils travel from a capillary to infected regions where antibody / antigen complexes are located. A neutrophil destroys an antigen by engulfing it and injecting lethal chemicals. Macrophages will arrive later to consume any remaining debris. Neutrophils are involved in cellular defense (phagocytosis) of small pathogenic microorganisms. Lymphocytes are involved in the specific immune response and are composed mainly of precursor T cells and B cells (pre-T cells and B cells). Pre-T cells and B cells are subsets of lymphocytes that originate in the red bone marrow from hematopoietic stem cells. Pre-T cells (also known as T lymphocytes) circulate in the blood before migrating to the thymus where they develop into specialized cells (helper T cells and killer T cells) that are able to identify antigens and infected tissue cells. Platelets are cell fragments in the blood that play an essential role in blood clotting and wound repair. Platelets can also activate certain immune responses.
Magnification*: x1,600
Type: SEM
    *(Magnifications are based on a 35mm slide image of 24mm in the narrow dimension.)
Keywords:   28888A 12.01.08 human body human blood human white blood cell white blood cells white blood cell red blood cells granulocyte granulocytes granulocytic neutrophil neutrophils immune response inflammation polymorphonuclear red blood cell antibody antigen cellular defense phagocytosis leukocyte leukocytes immune system helper T cell killer T cell leukocyte pre-T cell T-lymphocyte T cell T lymphocyte blood precursor T cell precursor T cells B cell B cells helper T cells killer T cells T-lymphocytes T cells T lymphocytes medical SEM antibodies antigens

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