Fig. 4

Body fat and thyroid hormones of striped hamsters. A Body fat content, and B serum T3; C serum T4 and D the ratio of T3 to T4. Animals were exposed to 21, 10 and 0 °C for 14 days and transferred to a warm temperature at 30 °C on days 15–42. Data are means ± s.e.m. *, significant difference between the groups (P < 0.05), **, P < 0.01, ns, non-significant difference (P > 0.05)