991 resultados para Wright, Lawrence: Kaksoseteetin arvoitus


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no.82 (1990)

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no.6 (1979)

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v.2 (1948)

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v.50:no.1-8 (1972-1974)

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v.48:no.1-13 (1968-1969)

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v.44 (1963)

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The microbiological assay method of Snell and Wright for niacine was studied and some modifications of the basal medium were proposed. A maximal growth of the "Lactobacillus arabinosus" was obtained by the addition to the basal medium of 25 mg % asparagine and increasing the percentages of glucose and sodium acetate. Liver and yeast extracts were assayed satisfactory and the niacine added was recovered quantitatively.