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  • Title: Relationship between colloid osmotic pressure and plasma protein concentration in cattle, horses, dogs, and cats.
    Author: Thomas LA, Brown SA.
    Journal: Am J Vet Res; 1992 Dec; 53(12):2241-4. PubMed ID: 1282310.
    Abstract:
    The relationship between colloid osmotic pressure (COP) and protein concentration was investigated for purified proteins and plasma samples obtained from cattle, horses, dogs, and cats. At equivalent concentrations, bovine albumin exerted a COP that exceeded that of gamma-globulins by a mean factor of 4.4. Similar relationships between COP and protein were observed in the other species. Consequently, for a given total protein concentration, COP was dependent on the albumin/gamma-globulins ratio. A commonly used nomogram for estimating COP from protein concentration, the Landis-Pappenheimer equation, did not provide reliable results for plasma samples from these species.
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