Jay Dunlap is chairman of the Department of Genetics,
Dartmouth Medical School, 7200 Vail Building, Room 413,
Hanover, New Hampshire 03755, USA
jay.c.dunlap@dartmouth.edu
Jagota and colleagues show that sectioning the suprachiasmatic nucleus
in a different orientation than usual reveals two peaks of circadian activity,
consistent with behavioral rhythms in vivo.
