CATTLE SERUM TRANSFERRINS: A BALANCED POLYMORPHISM?
نویسندگان
چکیده
منابع مشابه
Serum Albumin Polymorphism in Cattle.
FIVE cattle serum albumin phenotypes resolved by starch gel electrophoresis have been described briefly by ASHTON and LAMPKIN (1 964). It was suggested that the variation represented serum albumin polymorphism controlled by a locus with three alleles. Further observations on albumin phenotypes have been made on British and Zebu beef and dairy cattle in Australia and are the subject of this report.
متن کاملIs Pi a selectively balanced polymorphism?
A stable polymorphism of the Pi alleles M1, M2 and M3 close to their observed frequencies has been predicted, simply by relating fitness to the proportion of each genotype having alpha 1-antitrypsin (alpha 1-AT) levels greater than 100 mg/100 ml. By further specifying that the rare S and Z genotypes with low alpha 1-AT levels have enhanced fertility, equilibria of the M, S and Z alleles have al...
متن کاملStudies on the Transferrins of Adult Serum, Cord Serum, and Cerebrospinal Fluid
Nine of the twelve known variants of human transferrin have been resolved by the action of neuraminidase into stepwise patterns of four additional slower moving components whose relative intensities depended upon the concentration of enzyme. These components appeared to represent the stepwise removal of the four sialic acid residues from the transferrin molecule, and at large enzyme concentrati...
متن کاملSubdivision of the allele Tfd for transferrins in Holstein and Ayrshire cattle.
ENETICALLY controlled differences in the p-globulins of British breeds of Gdairy cattle have been described by SMITHIES and HICKMAN (1958) and ASHTON (1958). GIBLETT, HICKMAN and SMITHIES (1959) showed that these ,@globulins are transferrins. The same transferrin differences have been described in Swedish cattle (GAHNE, RENDEL and VENGE 1960) and in Danish cattle ( H~JGAARD, MOUSTGAARD and M ~ ...
متن کاملthe effect of oxytetracycline on serum calcium, phosphorus and magnesium in cattle
نتایج این مطالعه نشان می دهد که مقدار کلسیم (یونیزه و تام)، منیزیم و فسفر به طور معنی داری تغییر پیدا کرد به جزء مقدار کلسیم تام و منیزیم در روش داخل عضلانی که تغییر معنی داری نداشته است. بر اساس نتایج این مطالعه می توان نتیجه گیری کرد که اکسی تتراساکلین بر روی مقادیر سرمی کلسیم و منیزیم تأثیر می گذارد باید مقدار این کاتیون ها در بیماران، در هنگامی که اکسی تتراسایکلین استفاده می شود مورد توجه ق...
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ژورنال
عنوان ژورنال: Genetics
سال: 1965
ISSN: 1943-2631
DOI: 10.1093/genetics/52.5.983