The distribution of Mo99inSaccharomyces cerevisiaeandCandida kruseigrown in the presence of sodium molybdate has been examined by physical fractionation methods. The major fraction of molybdenum was bound to the cell wall; however, 48% of bound molybdenum penetrated the cells ofSaccharomyces cerevisiae.InCandida kruseicells, no intra‐cytoplasmic molybdenum was detecte
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