F the many substances that have been found to be mutagenic several are 0 also carcinogenic and considerable evidence has been accumulating to indicate a relationship between these two properties. Nitrogen and sulfur mustards were shown by AUERBACH and ROBSON (1944) to be mutagenic for Drosophila, a finding which has been confirmed by DEMEREC (1947a,b), BURDETTE (1952) and others. Nitrogen musta...

Circadian rhythms are endogenous cellular patterns that associate multiple physiological and molecular functions with time. The Neurospora circadian system contains at least three oscillators: the FRQ/WC-dependent circadian oscillator (FWO), whose core components are the FRQ, WC-1, WC-2, FRH, and FWD-1 proteins; the WC-dependent circadian oscillator (WC-FLO); and one or more FRQ/ WC-independent...