Oral and integumental uptake of free exogenous glycine by the Japanese spiny lobster Panulirus japonicus phyllosoma larvae.

The possibility of direct integumental absorption of the amino acid glycine from a solution in seawater was investigated in 250-260 day old (16.9-50.0 mg wet mass) phyllosoma larvae of the Japanese spiny lobster Panulirus japonicus Von Siebold 1824.

Dynamics and histological characteristics of gonadal sex differentiation in pejerrey (Odontesthes bonariensis) at feminizing and masculinizing temperatures.

This study evaluated the effects of different temperatures on the histological process of sex differentiation in the pejerrey Odontesthes bonariensis, a fish with marked temperature-dependent sex determination (TSD), at feminizing, neutral, and masculinizing temperatures. Fish reared at three temperatures (17 degrees C, 24 degrees C, and 29 degrees C) from hatching were sampled weekly until 11 weeks and their gonads were examined by histology. The percentages of females at 17 degrees C, 24 degrees C, and 29 degrees C were 100%, 73%, and 0%, respectively.

Biomechanical stress in bone surrounding an implant under simulated chewing.

The concept of reducing nonaxial loading of dental implants has been widely regarded as the standard procedure. The aim of this study was to reveal the biomechanical stress distribution in supporting bone around an implant and a natural tooth under chewing function. Three-dimensional finite element models of the mandibular first molar and the titanium implant both with the mandible in the molar region were constructed.

Differential expression and cellular localization of activin and inhibin mRNA in the rainbow trout ovary and testis.

An inhibin cDNA from rainbow trout consisted of 1305 bp, which coded for 352 amino acid residues. The deduced amino acid sequence of mature inhibin was 50 to 60% identical to mammalian sequences. Distribution of inhibin alpha and activin beta A and beta B in different ovarian and testis compartments was studied in rainbow trout by in situ hybridization with complementary RNA probes.