background: tolnidamine-induced changes have been reported earlier on spermatogenesis, fertility and sperm count in rat, rabbit and langur monkey. the aim of this study is to assess the response of these aspects to tolnidamine in the laboratory mouse. materials and methods: adult male mice (12-14 weeks old) of parkes (p) strain were used in the present study. all the animals were divided into f...

The evolutionarily conserved paired domain consists of the N-terminal PAI and the C-terminal RED domains, each containing a helix-turn-helix motif capable of binding DNA. Despite its conserved sequence, the physiological functions of the RED domain remain elusive. Here, we constructed a prd transgene expressing a truncated Paired (Prd) protein without the RED domain, and examined its rescue abi...

Platyscytus decempunctatus Carvalho is a small mirid living throughout its life cicle plant Solanum cernuum Vell. (Solanaceae). The internal morphology of P. decempunctatus was studied and found that the female has a telotrophic ovary with three ovarioles in the right ovary and five in the left one. In the male reproductive trait there is a well developed tubular accessory gland. The phytophago...

The aim of the present report was to investigate dynamics of morphological and functional changes in the reproductive system of male rats between 20th and 84th day of life, injected neonatally with a single dose of stilbestrol. Marked reduction in relative weights of testes and accessory sexual glands was demonstrated in various periods of life. This was associated with inhibition of spermatoge...

Heliocotyle ewingi sp. n. (Monogenea: Monocotylidae) is described from the gills of Myliobatis australis Macleay, 1881 (Myliobatididae) collected from Norfolk Bay near Hobart, Tasmania, Australia. Heliocotyle ewingi can be distinguished readily from the only other species in the genus, Heliocotyle kartasi Neifar, Euzet et Ben Hassine, 1999, by the presence of a single pseudoseptum on each of th...

The reproductive tract of the male Cape porcupine is morphologically and histologically similar to that of New World hystricomorph rodents. Males are reproductively active throughout the year and attained sexual maturity (complete spermatogenesis) at an age of 8-18 months. Testes weight, epididymides weight and seminiferous tubule diameter attained asymptotic values at the age of 23-30 months. ...

human peripheral blood monocytes have been found to undergo a transitory state of high accessory activity before they fully become macrophages. time kinetics were done to follow this accessory potential. studying the regulation of accessory activity, we have found that monocyte derived accessory cells (m-ac) pass through two phases of development, both of which are adversely controlled by cycli...

General The male reproductive system tissues include testes, epididymides, the various accessory sex glands, and the penis. These tissues exhibit direct and indirect (usually hormonal) pleotrophic pathologic responses, often with a change in one reproductive tissue accompanied by changes in other reproductive tissues. The majority of the male reproductive tissues are paired, allowing identifica...