Blood Plasma

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Plasma, Blood


the fluid portion of the blood. Plasma contains the formed elements of the blood—erythrocytes, leukocytes, and thrombocytes. It is a colloidal solution of inorganic compounds and such organic compounds as proteins; it also contains more than 20 vitamins and 20 trace elements, including iron, phosphorus, calcium, zinc, and cobalt. Plasma analysis is of great use in diagnosing various diseases. For example, the diagnostician looks for abnormal proteins, such as the C-reactive protein in rheumatism. Various diseases can be detected by an increase in the content of normal blood constituents; for example, hyperglycemia, which is the abnormally high content of sugar in the plasma, is symptomatic of diabetes mellitus. Increase in the titers of certain antibodies can also serve as a diagnostic clue in certain diseases. The medicinal substances albumin, dried blood plasma, fibrinogen, and gamma globulin are prepared from blood plasma.

Figure 1. Schematic representation of plasma types: (a) a gaseous plasma, (b) an electron plasma in a metal, (c) an electron-hole plasma in a semiconductor. The shaded circles are neutral atoms, the small solid circles represent mobile electrons, the large white circles with plus signs represent ions, and the small white circles represent conduction holes.


Tumanov, A.K. Syvorotochnye sistemy krovi. Moscow, 1968.
References in periodicals archive ?
The team reported they worked with 18 volunteers with mild-tomoderate Alzheimer's who received four weekly infusions of either a placebo saline solution or blood plasma from donors aged between 18 and 30.
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During the operation to amputate his leg on January 12, Andreou received three blood bags and four blood plasma bags which came from seven separate donors, five from Paphos general hospital and two from Larnaca general hospital.
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Coverage begins with blood components and blood plasma proteins, followed by discussion of domains, motifs and repeats; protein families; and posttranslational modifications.
The request is based on recently published research showing that blood plasma levels of ascorbic acid can be raised three times greater than earlier believed.
The RLUH is sending out letters because it has been able to identify patients who may have used the batches of blood plasma involved.
The Department of Health is sending out more than 6, 000 letters to patients warning them they may have been exposed to the brain wasting disease through blood plasma products.
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