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Keywords: Rana esculenta
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Journal Articles
J Exp Biol (2006) 209 (19): 3806–3811.
Published: 1 October 2006
...Gianluca De Rienzo; Francesco Aniello; Margherita Branno; Gaia Izzo; Sergio Minucci SUMMARY Frog relaxin ( fRLX ) belongs to the relaxin/insulin gene family present in the testis of Rana esculenta and is specifically expressed by Leydig cells. Since the expression of fRLX transcript changes during...
Journal Articles
J Exp Biol (2006) 209 (1): 66–77.
Published: 1 January 2006
...Sandra Nauwelaerts; Peter Aerts SUMMARY Anurans use a saltatorial (jumping) mode of locomotion. A jumping cycle can be divided into four subphases: propulsion, flight, landing and recovery. We studied the landing phase during locomotion in Rana esculenta by measuring the ground reaction forces...
Journal Articles
J Exp Biol (2005) 208 (8): 1445–1451.
Published: 15 April 2005
... Rana esculenta , applying digital particle image velocimetry (DPIV) to the frog's wake. The wake showed two vortex rings left behind by the two feet. The rings appeared to be elliptic in planform, urging for correction of the observed ring radii. The rings' long and short axes (average ratio 1.75:1...
Journal Articles
J Exp Biol (2005) 208 (8): 1435–1443.
Published: 15 April 2005
... ), many animals succeed in using their limbs to locomote both in water and on land. Green frogs Rana esculenta are semi-aquatic frogs that typically sit alongside small waterbodies, and will leap into the water when disturbed. Jumping and swimming seem equally important to this frog, making...
Journal Articles
J Exp Biol (2004) 207 (13): 2209–2213.
Published: 1 June 2004
...Paolo Chieffi; Sergio Minucci SUMMARY Recent studies suggest a role for ERK1 in the regulation of spermatogonial proliferation. In this report the frog Rana esculenta , a seasonal breeder, was used as a model to study the possible effect on ERK1 of photoperiod and temperature. Adult male R...
Journal Articles
J Exp Biol (2004) 207 (3): 437–441.
Published: 22 January 2004
..., with the differentiation and/or proliferation of mast cells induced by estradiol treatment either in vivo or in vitro in the testis of the frog Rana esculenta . References Chen, H., Centola, M., Altschul, S. F. and Metzger, H. ( 1998 ). Characterization of gene expression in resting and activated mast cells. J. Exp...
Journal Articles
J Exp Biol (2003) 206 (23): 4341–4351.
Published: 1 December 2003
.... In this study, we examine the use of the propulsive impulse as a covariate in the comparison of the kinematics of locomotion of a semi-aquatic frog Rana esculenta , across land and through water. We focused on the propulsive phase because it is functionally the most significant phase of the locomotor cycle...
Journal Articles
J Exp Biol (2003) 206 (17): 3043–3052.
Published: 1 September 2003
... pH. 31 P and 1 H nuclear magnetic resonance spectroscopy high-resolution measurements were carried out at 4.7 T in isolated frog ( Rana esculenta ) gastrocnemius muscle during anoxia to assess, by means of reference compounds, the concentration of all phosphate metabolites and lactate. Intra...