Abstract
Summary
Male rats were subjected to stress by graded reduction of available food or an environmental temperature of 4°C with food ad libitum. The stressed animals exhibited increased adrenal and thyroid weights and atrophy of the thymus. Isometric tail tendon contraction carried out in 40% KI solution at room temperature showed significant increases, indicative of aging, as food was reduced 60-80% of control consumption. However, the environmental stress of 4°C (without food restriction) did not significantly change the isometric tension of the tail tendon.
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