| abortion |
The premature termination of pregnancy induced by illness, drugs, or physical factors where the fetus cannot survive.
Ãâó: www.dqacenter.org/university/def.htm
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| ABO b. |
the major human blood group system, dependent on the presence or absence of A and B antigens, which are largely glycolipids on the cell membrane. The gene for A is responsible for synthesis of N-acetyl-α-D-galactosaminyl transferase, whereas that for B is responsible for α-D-galactosyl transferase. Either A or B is created when one of these hexasaccharides is positioned by a specific transferase in 1→3 linkage to the β-D-galactose of an H-active oligosaccharide. Type O occurs when neither transferase is present or, very rarely (Bombay phenotype), when H antigen does not exist. When both transferases are present, type AB results. Differences in degree of transferase activity are determined at the same locus: weak transferase gives rise to weak antigens (A2, A3Ax, B3Bx). Similar oligosaccharides, especially in bacterial cell walls, immunize persons lacking A or B so that their serum contains anti-A or anti-B activity. A and B antigens are on the mucopolysaccharides of secretors; persons with dominant genes have H-active mucoids.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| abomasal a. |
inadequate tone in the abomasal muscles, often seen in postparturient cows and a contributing factor to right and left displacement of the abomasum (see under displacement).
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| abomasal b. |
bloat in calves or lambs on milk replacement diets, seen especially when the milk replacer is warm or contains insoluble ingredients or if the animals have not been fed for a few hours and drink too much. The distended abomasum may compress adjacent organs and vessels, resulting in fatal asphyxia or heart failure.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| abomasal g. |
the part of the gastric groove that is located in the abomasum.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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