Purdue researchers discover basis for...

Purdue researchers discover basis for biological clock: "The biological clock timekeeper for virtually every activity within living things, from sleep patterns to respiration is a single protein, Purdue University researchers report. The husband and wife team of D. James and Dorothy Morré has discovered this protein, which is responsible for setting the length of periods of activity and inactivity within cells. If the protein is altered, an organism's body will experience "days" of different length ranging from 22 to 42 hours in length in some cases. The discovery could have far-reaching implications for medicine. "