Abstract
AN organism producing coal-black colonies on blood agar has been isolated in numbers of 104–5/gm. from the rumen contents of six cows fed on kale, hay and concentrates or grass diets and from the rumens of two abbatoir-killed cows. It may therefore be a normal component of the flora of the bovine rumen.
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LEV, M. Apparent Requirement for Vitamin K of Rumen Strains of Fusiformis nigrescens . Nature 181, 203–204 (1958). https://doi.org/10.1038/181203a0
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DOI: https://doi.org/10.1038/181203a0
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