Abstract
Summary
In the present study the incorporation of P32 into lung PC (cpm/mg DNA) was lowest in the sloth, was progressively higher in the cat, rabbit, and rat, and was highest in the mouse. It was 25 times greater in the adult mouse than in the sloth when expressed per gram fresh weight of lung tissue; it was 15 times greater when expressed as per mg DNA; and it was 11 times greater when expressed as specific activity. Lung PC specific activity from this study correlates well with alveolar surface area per unit lung volume, alveolar diameter, and oxygen consumption.
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