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|Title:||CIRCANNUAL RHYTHMS IN THE ACTIVITY OF THE PARATHYROID-GLAND AND ULTIMOBRANCHIAL BODY CELLS OF THE FROG RANA-TEMPORARIA (ANURA, AMPHIBIA)||Authors:||GEVAERTS, Hugo||Issue Date:||1991||Publisher:||ASSOCIATED CHRONOBIOLOGIA RESEARCHERS||Source:||CHRONOBIOLOGIA, 18(1). p. 21-30||Abstract:||The annual activity of the parathyroid gland cells and those of the ultimobranchial body cells of the frog Rana temporaria is quantitatively investigated by a morphometric study. A cosinor analysis shows a periodic succession of different parameters. The secretory activity of the parathyroid cells starts after a maximal value of external temperature in July. This activity is followed by an increase of plasma calcium which seems to induce the activity of the ultimobranchial cells.||Notes:||GEVAERTS, H, LIMBURGS UNIV CENTRUM,DEPT SBM,B-3590 DIEPENBEEK,BELGIUM.||Keywords:||AMPHIBIA; CIRCANNUAL; FROG; MORPHOMETRY; PARATHYROID GLAND; PLASMA CALCIUM; RANA; SEASONAL CYCLE; ULTIMOBRANCHIAL BODY||Document URI:||http://hdl.handle.net/1942/3912||ISI #:||A1991FM12100003||Type:||Journal Contribution|
|Appears in Collections:||Research publications|
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