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A method has been developed to determine the age of fossil bone samples based on amino acid racemization (AAR). Approximately one hundred fossil bone samples of known age from Hungary were collected and analysed for D- and L-amino acids. As the racemization of amino acids is affected by temperature, pH, metal content of the soil, and time passed since(More)
The California Mastitis Test was used as an indicator of mastitis in this study. Five cows were chosen for each of the five test scores (from 0 = healthy to 4 = severe mastitis). Milk samples were analyzed for free AA and free D-AA. The contents of free AA, free D-AA, and the ratio of free D-AA to free AA increased significantly as the California Mastitis(More)
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