Fig. 9. Litter size (A), pup body mass (B), litter mass (C) and litter mass
increase between days 13 and 14 of lactation (D) in mice lactating at hot
(30°C), warm (21°C) and cold (8°C) temperatures. Litter size, pup
body mass and litter mass refer to day 14 of lactation. Bars are means + 1
S.D. (N as in text). Different letters above bars indicate
significant differences between the temperatures (P<0.05), as
assessed by ANOVA followed by Tukey pairwise comparisons.