Wavelength dependency of light-induced changes in rhythmic melatonin secretion from chicken pineal gland in vitro.
: Avian pineals show rhythmic, circadian melatonin secretion pattern also in vitro. The phase of this rhythm can be modified by changing the illumination. Reversed in vitro illumination reverses the phase of the circadian melatonin rhythm in two days. In the present study the effect of the wavelength on the speed of the phase shift of t.....