Opposite effects of one and three injections of cortisone or thyroxine on intestinal lactase activity in suckling mice
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A single injection of cortisone or thyroxine to 8-day-old suckling mice initiates a temporary decrease of lactase activity. On the contrary, 3 injections of cortisone or thyroxine provoke a significant increase of lactase activity. It appears that the mechanism which controls the postnatal development of lactase in suckling animals is more complex than expected.
KeywordsOpposite Effect Thyroxine Single Injection Cortisone Temporary Decrease
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