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Qualitative abnormalities of white blood cells, like toxic granulation, are also visible on the blood smear. Modern complete blood count analyzers can provide an automated white blood cell differential, but they have a limited ability to differentiate immature and abnormal cells, so manual examination of the blood smear is frequently indicated.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Elliptocytes, also known as ovalocytes or cigar cells, are abnormally shaped red blood cells that appear oval or elongated, from slightly egg-shaped to rod or pencil forms. They have normal central pallor with the hemoglobin appearing concentrated at the ends of the elongated cells when viewed through a light microscope.
mean 7 × 10 −11: maximum <20 × 10 −11: Globulin: total 2.2-4 × 10 −2: alpha-1-Globulin 1-4 × 10 −3: alpha-2-Globulin 4-10 × 10 −3: beta globulin: 5-12 × 10 −3: gamma globulin: 6-17 × 10 −3: Glucagon: range 5-15 × 10 −11: mean 7.1-7.9 × 10 −11: Glucosamine: fetus 4-6 × 10 −4: 4.2-5.5 × 10 −4: child 5-7 × 10 −4 ...
Transmission electron microscope image of a capillary with a red blood cell within the pancreas. The capillary lining consists of long, thin endothelial cells, connected by tight junctions . The vessels on the arterial side of the microcirculation are called the arterioles , which are well innervated, are surrounded by smooth muscle cells, and ...
The light path begins at the illuminator or the light source on the base of the microscope. Often a halogen lamp is used. The light travels through the objective lens into the ocular lens, through which the image is viewed. Bright-field microscopy may use critical or Köhler illumination to illuminate the sample. [16]
a microscope associated apparatus used for manual counting of cells in body fluids like blood, etc. including for sperm count: Wintrobe's tube: used for ESR (Wintrobe's method), PCV, haematocrit, etc. Westergren's tube and ESR stand: used for ESR (Westergren's method)
Rouleaux of red blood cells under the microscope is an artifact which occurs when the blood sample at the edge of the coverslip [15] starts to dry out; where a large number of red blood cells clump together; or when the blood starts to clot when contacted with the glass. These artifacts are observed in only small, selected areas on the slide ...