Os hamster são pequenos mamíferos da ordem Rodentia. São comumente adotados como animais de companhia principalmente devido ao seu tamanho, aparência e docilidade, juntamente com outros roedores. Uma das espécies mais comuns no mercado pet é o hamster-sírio (Mesocricetus auratus), criado em cativeiro hábitos crepusculares solitários. A popularização dos roedores exóticos companhia, eleva a dema...

The albino rat retina is severely damaged by exposure to bright light. The degree of damage depends upon the intensity of the exposure and its duration. In the present study, electroretinographic (ERG) responses were measured in rats exposed at different ages during the period of retinal development to 24 hr of bright light and then transferred to darkness for about 2 months. The ERG data indic...

zona pellucida contains receptors for a variety of plant lectins, glycoproteins that bind to specific saccharide determinants (Oikawa, Yanagimachi & Nicol¬ son, 1973; Oikawa, Nicolson & Yanagimachi, 1974; Nicolson, Yanagimachi & Yanagimachi, 1975). Some of these lectins can bind to the zona pellucida and induce egg agglutination and/or cause changes in the ability of the exterior region of the ...

ITTLE attention appears to have been paid in recent years to neurophysioL logical differences between mammals capable of hibernation and those that are not. Horvath (I) pointed out that certain species (ground squirrel, hedgehog, European hamster, and bat) could be cooled artscially until their rectal temperatures approached 0°C. and still revive spontaneously on being returned to a warmer envi...

The site of sperm capacitation, the agents and mechanisms causing capacitation and acrosome reaction (AR) in vivo are not well understood. The female reproductive tract has been reported to play a key role during capacitation and AR. Some experiments were carried out on the capacitation and AR of hamster epididymal spermatozoa in the estrogen and progesterone dominated uterus (estrous and diest...

vampirolepis nana is the most common cestode in humans especially children. domestic mice and rats can serve as definitive hosts for v. nana. confusion exists over the species status and host-specificity of this tapeworm. in a previous study done by the same authors it was found that the egyptian human isolates of v. nana could be used to infect mice for experimental work. eggs in human feces a...

introduction: genital system is important herd in animal's creation. it is necessary for animal reproduction. mammal has two sex in genital system such as male and female in separated animals. animal reproduction destroyed by disorder of genital system. in this case, animals cannot produce an animal similar to them. finally it cause overthrow a species of animals. methods: histomorphologic...

A 2-year-old multiparous (Case 1) and a 2.5-year-old nulliparous 2) Djungarian hamster each presented with history of prolapsed mass from the vulva. partial uterine prolapse was diagnosed in both cases, according to clinical diagnostic examinations. The replaced hamster, an ovariohysterectomy performed. histopathological examination removed tissues revealed cyst papillary hyperplasia ovary. Thi...

background and objectives: accelerating wound healing is a very important factor for patients to return to ordinary life. laser seems to have positive effect on cutaneous wound healing. this study aimed to investigate the effect of red light laser 630 nm on cutaneous surgical wound in hamster and to compare outcomes such as angiogenesis, number of fibroblasts and collagen formation in intervent...

the objective of the current study was to determine the anatomical features of the auditory ossicles inhamster. twenty temporal bones from 10 adult hamsters, weighing 275-300 g were used. after dissectingthem, the features of the ossicles were assessed with an ocular micrometer and photographed by astereomicroscope. finally, all data were evaluated and analysed using the sigma statt software. t...