Investigating possible ways of the increase in the rate of organic acid transport in the kidney of frogs, it has been demonstrated that animals which passed hypobiosis exhibit the increase in maximum capacity of the kidney to secretion of paraaminohippurate during substrate stimulation evoked by the injection of this salt twice a day within three days, as well as by the injection of triiodthyronine once a day within three days. The effect produced is similar to kidney reaction in adult mammals.
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