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Distribution of cell lengths in cultures of a lexA mutant of Escherichia coli K-12.

ABSTRACT

Distributions of cell lengths in lexA+ and lexA mutant cultures during normal growth and under thymidine starvation conditions are presented. During normal growth lexA mutant cells were slightly shorter, on the average, than were lexA+ cells. lexA mutant cells were also shorter in comparison with lexA+ cells after a period of thymidine starvation. These results are consistent with the hypothesis that the lexA gene is involved in the coordination of cell division with DNA repair.