Abstract
1. Renin-like activity was found in rat submaxillary glands.
2. This activity was destroyed by boiling, was non-dialyzable and showed an optimum at approximately 50° C.
3. Renin-like activity in the submaxillary gland was not diminished 24 h after nephrectomy but was considerably reduced after ligature of the submaxillary duct.
4. Renin-like activity in the submaxillary gland was reduced following food-deprivation, water-deprivation or hypovolemia.
5. Renin-like activity in the rat submaxillary gland was increased after isoproterenol administration but not following pilocarpine.
6. Renin-like activity in the rat submaxillary gland was increased considerably by administration of NaCl or KCl, as well as following adrenalectomy.
7. Chlorothiazide and ouabain increased submaxillary renin-like activity but diazoxide did not affect this activity.
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