Hypocalcemic factor in the ultimobranchial gland of the frog,Rana rugosa |
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| Affiliation: | 1. Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N Matthews Ave, Urbana, IL 61801, United States;2. Office of the Provost, Northeastern University; 100 CH, 360 Huntington Ave, Boston, MA 02115, United States;3. Department of Psychology, Northeastern University; 125 Nightingale Hall, 360 Huntington Ave, Boston, MA 02115, United States;4. Department of Mechanical & Industrial Engineering, Northeastern University, 360 Huntington Ave, Boston, MA 02115, United States;5. Center for Nutrition, Learning, and Memory, University of Illinois at Urbana-Champaign, IL 61801, United States;6. Department of Psychology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States;7. Decision Neuroscience Laboratory, University of Illinois at Urbana-Champaign, IL, United States;8. Department of Bioengineering, University of Illinois at Urbana-Champaign, IL, United States;9. Neuroscience Program, University of Illinois at Urbana-Champaign, IL, United States |
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| Abstract: | - 1.1. The hypocalcemic activity of the ultimobranchial gland of the frog, Rana rugosa, was estimated using a rat bioassay method.
- 2.2. Extracts of the ultimobranchial gland showed a very high hypocalcmic activity. The value corresponded to 6,340 mU (MRC)/kg b.w.
- 3.3. Serum inorganic phosphorus values of rats received the extract decreased in proportion to the dose, although no changes were found in serum sodium concentration.
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