BACKGROUND & OBJECTIVES Trypanosomiasis has remained a major set-back in the development of livestock farming in tropical Africa. Thus the need for ascertaining the trypanotolerant levels of domestic animal breeds and possible improvement on them cannot be over-emphasised. METHODS Level of trypanotolerance in animals was compared between sexes using albino mice infected with a Nigerian strain...

JOLLY,DENNIS W., CAROLYN CRAIG, ANDTHOMAS E. NELSON, JR. Estrogen and prothrombin synthesis: effect of estrogen on absorption of vitamin K,. Am. J. Physiol. 232(l): H12H17, 1977 or Am. J. Physiol: Heart Circ. Physiol. l(1): H12H17, 1977. -Intact male and female albino rats fed a vitamin K-deficient diet develop a plasma prothrombin-proconvertin deficiency. Male rats respond with a precipitous d...

Intact male and female albino rats fed a vitamin K-deficient diet develop a plasma prothrombin-proconvertin deficiency. Male rats respond with a precipitous drop to approximately 20-30% of normal plasma levels within 2-5 days, whereas female rats respond at a slower rate. Ethynylestradiol, 5-10 mug/day, or castration, reduces the progressive decline of plasma prothrombin-proconvertin seen in no...

It is believed that when two male rats copulate with a single female, the last one that ejaculates fathers significantly more pups than the first one. To determine the effects of order and elapsed time between two males copulating with the same female, albino Wistar (W) and pigmented Long-Evans (LE) male rats copulated with a W female. Paternity was confirmed by the pups' pigmentation. Three gr...

male guinea pigs show high susceptibility to burkholderia mallei and have been used as animal models in glanders studies. the purpose of our study was to elucidate glanders comparative pathogenesis in guinea pigs. we present here the histological changes and bacterial isolation that develop over time in guinea pigs inoculated intraperitoneally (ip) with two strain of b. mallei. ten male guinea ...

A new tiger beetle species, Cicindelidiamelissa Duran & Roman, sp. n., of the tribe Cicindelini, is described from high elevation montane forests of southeastern Arizona and Mexico. It appears to be most closely related to Cicindelidianebuligera (Bates) but is distinguished on the basis of multiple morphological characters and geographic range. The new species is also superficially similar to t...

The elemental composition was investigated and applied for identifying the sex and habitat of dugongs, in addition to distinguishing dugong tusks and teeth from other animal wildlife materials such as Asian elephant (Elephas maximus) tusks and tiger (Panthera tigris tigris) canine teeth. A total of 43 dugong tusks, 60 dugong teeth, 40 dolphin teeth, 1 whale tooth, 40 Asian elephant tusks and 20...

background: infertility is considered as a major health care problem of different communities. the high prevalence of this issue doubled its importance. a significant proportion of infertility have been related to environmental conditions and also acquired risk factors. different environmental conditions emphasized the need to study the different causes of infertility in each area. objective: t...

Neuropathic pain which is a chronic pain causes hyperalgesia due to peripheralm nerve damage.the relation between neuropathic pain and hyperalgesia and the response to treatment in case of somatic and inflammatory pain have been investigated previuosly.however the response of visceral pain in peripheral neuropathy and the possible gender differences in visceral pain response and gender differnc...