TY  - GEN
AU  - Gorman,M R
AU  - Freeman,D A
AU  - Zucker,I
TI  - Photoperiodism in hamsters: abrupt versus gradual changes in day length differentially entrain morning and evening circadian oscillators
SN  - 0748-7304
PY  - 1997///0609
KW  - Animals
KW  - Circadian Rhythm
KW  - Cricetinae
KW  - Light
KW  - Male
KW  - Motor Activity
KW  - physiology
KW  - Organ Size
KW  - radiation effects
KW  - Phodopus
KW  - Photoperiod
KW  - Seasons
KW  - Testis
KW  - anatomy & histology
KW  - Time Factors
N1  - Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S
UR  - https://doi.org/10.1177/074873049701200204
ER  -