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Strains of Saccharomyces cerevisiae carrying a mutation in the TUP1 locus exhibited calcium-dependent flocculation. The flocculation had none of the characteristics of sexual agglutination. The flocculation differed from that exhibited by a FLO1 strain in the effect of pH on cation dependence and sensitivity to chemical inactivation.
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Lipke et al. (1984) studied this question.
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