Fig. 2.
Change in body weight of rats consuming either unlabeled or deuterated water. A: rat body weight in g (values are means ± SE, although the error bars are typically smaller than the symbols). Rats were 26 days old on day 0 on the graph. Rats received either 8% volume of deuterium oxide in drinking water (2H2O; ◇) (n = 16) or plain tap water (H2O; gray diamonds) (n = 5). Rats were weighed every 7th day until euthanization (no. of rats remaining: day 42, n = 16; day 49, n = 12; day 56, n = 8). #Rats receiving deuterium oxide were slightly but significantly (2-way repeated-measures ANOVA) heavier than the control rats. B: weekly relative change in rat body weight (means + SE). There was no significant difference in relative weekly growth (2-way repeated-measures ANOVA).