31.   The internal clock struck one Saturday for Mike Piazza and the Dodgers.

32.   The lights, he contends, can have the same effect on the internal clock as the intense lighting now used by researchers.

33.   They also have an internal clock which starts running as soon as the disc is played.

34.   Tests suggested the protein was present in retinal ganglion cells, or RGCs, which are in the nerve pathways leading to the internal clock in the brain.