Abstract
1. 1. An examination of calcium homeostasis in a facultative hibernator, the golden hamster ( Mesocricetus auratus) was made. 2. 2. Fresh bone length and weight, and ash bone calcium and phosphorus were examined in normo-thermic, cold-acclimated and hibernating hamsters. 3. 3. Although fresh bone weight changes were noted, when corrected for body weight, no change was seen in either hibernating or cold-acclimated animals. Bone calcium and phosphorus were similarly unaffected by these forcings. 4. 4. The data are supported by histologie studies of bone and constant plasma calcium values, and are discussed in terms of mechanisms underlying alterations in mineral balance.
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