Fig. 1
Weight changes following either 420–450 nm light exposure. (A) Mice exposed to 420 nm light gained significant weight over the 8 week period, while weight gain in their controls was lower. (B) The gain in weight was progressive and apparent from week 1 and showed some levelling off at weeks 7 and 8 by which time mice had accumulated almost 3 times the weight gained by controls. At each point from week 2 the differences between controls and 420 nm exposed animals were signifcantly different. (C) Similar patterns were found in mice exposed to 450 nm. (D) The progressive change in weight were significantly different between exposed animals and controls at each time point. Mice exposed to light in this group accumulated approximately 4 times that accumulated in controls. In the 450 nm exposed group weight gain appeared to continue at weeks 7 and 8. Both the 420 nm and 450 nm groups are pooled data from 2 completely independent replicates with identical outcomes. Abbreviations * = p,0.05, ** = p < 0.01, ***p < 0.005, ns = not significant.
