TY - GEN AU - Raiewski,Evan E AU - Elliott,Jeffrey A AU - Evans,Jennifer A AU - Glickman,Gena L AU - Gorman,Michael R TI - Twice daily melatonin peaks in Siberian but not Syrian hamsters under 24 h light:dark:light:dark cycles SN - 1525-6073 PY - 2013///0225 KW - Animals KW - Circadian Rhythm KW - physiology KW - Cricetinae KW - Male KW - Melatonin KW - blood KW - Mesocricetus KW - Motor Activity KW - Phodopus KW - Photoperiod KW - Species Specificity N1 - Publication Type: Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S UR - https://doi.org/10.3109/07420528.2012.719965 ER -