[The expression of mimicry with Il'ia lefimovich Repin].
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Biomedical subjects
Publications and source records attributed to J NEUMANN.
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Coumarin, usually regarded as an inhibitor of growth processes in plants, markedly stimulated the elongation of excised segments of Helianthus hypocotyls. Substitution in the molecule of hydroxy-, methyl-, or chloro-groups, in the neighborhood of the unsaturated bond in the lactone ring, markedly altered the growth-promoting activity.
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