Periods and growth rates of UV90 wild-type and mutant strains.

Cultures were grown in DD at 22°C, with (+) or without (−) 100 µM choline. Values are mean ± S.E.M. (number of race tubes). Where a period is reported, all tubes were rhythmic, except for csp-1 UV90+ in which one tube was unclear. N.D. = not determined; too few bands were visible to accurately calculate periods.