... progression and thus mediates testicular apoptosis. This explanation of testicular suppression via changes in apoptotic proteins, pro-caspase-3, active-caspase-3 and uncleaved PARP-1 appears reasonable because changes observed in 8-h quail testis were also evident in the regressed testes of scotosensitive...

... of MF respond to environmental factors such as salinity and temperature ( Lovett et al., 1997 ; Lovett et al.,2001 ). Thus, it seems plausible that MF is an endocrine link between the environment, eyestalk peptides and reproduction in crustaceans. methyl farnesoate testis crustacean salinity...

... experiments confirm that 17β-estradiol increases the mast cell number and indicate a melatonin-inhibitory role in their accumulation in the frog testis. In addition, melatonin interferes with the effects of estradiol on the increase of mast cell number in short-term cultured testes, and this result has also...

... in MYP as well as in other biochemical components in the ovary and testis were examined in the course of gametogenesis in Pseudocentrotus depressus . Before gametogenesis, both the ovary and testis contained large quantities of proteins, lipids and polysaccharides. MYP reached about 80% of total protein...

.... Scale bars, 20 μm. *Author for correspondence (e-mail: mic@affrc.go.jp ) 3 1 2002 © The Company of Biologists Limited 2002 2002 sex differentiation oocyte apoptosis testis ovary juvenile hermaphroditism zebrafish Danio rerio . During gonadal development...

... by Company of Biologists 1998 nonylphenol oestrogens testis vitellogenin Sertoli cell spermatogenesis γ-glutamyl transpeptidase histology eelpout Zoarces viviparus During the last couple of decades, increases in several pathological disorders in the human male reproductive system...

..., parachlorophenylalanine; C , control. The testis of control birds in the recrudescent phase had enlarged seminiferous tubules lined with many layers of germ cells. Spermatogenesis had started in most of the tubules and developmentally advanced stages including spermatocytes and round spermatids were present...