Core body temperature in mice lacking the PAC1 (PAC1-/-), - the VPAC2 (VPAC2-/-) and both (PAC1-/-VPAC2-/-) receptors (red) and their respective wild type (blue) during parametric a (LD cycle) and non-parametric light conditions (SP) during light intensity of 300 and 10 lux.

<p>Each diagram is an average of five days activity from each animal (n = 6 in each group, three males and three females) obtained after the animal has adapted to the light conditions and are presented as mean ±SEM.