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fraction |
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fraction /frac·tion/ (frak´shun) 1. a portion of something larger. 2. in chemistry, one of the separable constituents of a substance.frac´tional ejection fraction the proportion of the volume of blood in the ventricles at the end of diastole that is ejected during systole; it is the stroke volume divided by the end-diastolic volume, often expressed as a percentage. It is normally 65 ± 8 per cent; lower values indicate ventricular dysfunction. plasma protein fraction a preparation of serum albumin and globulin obtained by fractionating source blood, plasma, or serum from healthy human donors; used as a blood volume supporter.
fraction size expressed as a relative part of a unit. attributable fraction the proportion of disease in the exposed group which is caused by the factor. |
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