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Dairy Industry Division, University of California, Davis, California
ABSTRACT
The organisms isolated from an acute case of mastitis proved to be a toxic strain of E. coli.
In this case the onset was very sudden, and was noticeable at once by both chemical and bacteriological tests. There was also evidence that even though the infection remains localized in one quarter abnormal milk may be produced in all four quarters.
The results obtained with tests on pH, lactose and chloride determinations were in the same direction as those found by Roselle in latent chronic mastitis.
Both the chemical and microscopical tests used in this work were satisfactory in the diagnosis of an inflammatory condition of the udder.
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