Scanning Electron Microscope Image of Blood Cells

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Title: Scanning Electron Microscope Image of Blood Cells
Description: This is a scanning electron microscope image from normal circulating human blood. One can see red blood cells, several white blood cells including lymphocytes, a monocyte, a neutrophil, and many small disc-shaped platelets. Red cells are nonnucleated, and contain hemoglobin, containing iron an important protein which allows the cell to carry oxygen to other parts of the body. They also carry away carbon dioxide from the lungs. The infection-fighting white blood cells, are classified in 2 main groups: granular and agranular. Granulocytes are formed in bone marrow, agranulocytes are produced by lymph nodes and spleen. There are two types of agranulocytes: lymphocytes, fight disease by producing antibodies and thus destroying foreign material, and monocytes. Platelets are tiny cells formed in bone marrow and are necessary for blood clotting.
Topics/Categories: Cells or Tissue -- Abnormal Cells or Tissue
Type: B&W, Photo (JPEG format)
Source: National Cancer Institute
Creator: Bruce Wetzel and Harry Schaefer (Photographers)
AV Number: AV-8202-3656
Date Created: February 1982
Date Added: January 1, 2001
Reuse Restrictions: None - This image is in the public domain and can be freely reused. Please credit the source and, where possible, the creator listed above.