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Using immunological techniques, two serologically distinct elastin antibody fractions in antiserum prepared against bovine ligamentum nuchae elastin were identified (9). One is a species-specific fraction that bound only to bovine elastin. The other population of antibodies has affinity for elastin from porcine aorta, bovine ligamentum nuchae and aorta, rabbit and hamster lung, and human aorta. The elastin radioimmunoassay can be modified to detect bovine or other elastins, depending on the choice of radiolabeled antigen, in meat products. This assay also permits the study and quantification of elastin synthesis and degradation in a wide range of meat-animal species without having to raise specific antibodies to each one.

Table 1. Amino Acid Compositions of Elastins from Selected Tissues of Various Meat Animals

Residues per 1000 residues

Table 1. Amino Acid Compositions of Elastins from Selected Tissues of Various Meat Animals

Residues per 1000 residues

Amino Acid

Avian, insol"

Bovine, semitendinosus6

Sheep, vascular tissue0

Yellowfin tuna, dark muscled

Asp

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