Aflatoxin G2 was used to test the speed and accuracy of the microapplicator and the micropipette. The 50% lethal dose of both assay systems was approximately the same, and 4.0 mug of G2 had an 85% lethal effect in both systems. The 50% lethal dose of the microapplicator and the micropipette was lower than that of the syringe but, of these, only the micropipette can combine the accuracy of the m...

If cells are exposed to a mixture of hydroxylamine inactivated and infectious viruses the total rate of viral RNA-replication is lower than if the cells are infected with the same number of infectious viruses alone. This inhibitory influence of inactivated viruses depends on the ratio of infectious: inactivated viruses in the inoculum. One lethal hit by hydroxylamine suffices to produce the eff...

When investigating serious violence, studies tend to look primarily at offenders and their background. This study investigates the influence of offenders' and victims' criminal history and immediate situational factors on the likelihood that violent events will end lethally. For this purpose, we compare lethal with non-lethal events, and combine Dutch criminal records with data from court files...

Trichomoniasis is one of the most common parasitic sexually transmitted diseases in the world. Metronidazole was known as the most effective drug for human trichomoniasis., however, drug resistance and toxicity appeared. This study was designed to investigate the in vitro inhibitory activity of wheat germ agglutinin and Nigella sativa aqueous extract on the growth and motility of Trichomonas va...

It has been proposed that the Male Specific Lethal (MSL) complex is active in Drosophila melanogaster embryos of both sexes prior to the maternal-to-zygotic transition. Elevated gene expression from the two X chromosomes of female embryos is proposed to facilitate the stable establishment of Sex-lethal (Sxl) expression, which determines sex and represses further activity of the MSL complex, lea...

The effects in the chicken embryo assay of four Alternaria metabolites (alternariol [AOH], alternariol methyl ether [AME], altenuene [ALT], and tenuazonic acid [TA]) were investigated. Administered to 7-day-old chicken embryos by yolk sac injection, AOH, AME, and ALT caused no mortality or teratogenic effect at doses up to 1,000, 500, and 1,000 micrograms per egg, respectively. TA exhibited a c...

developed tumors depended on the number of viable cells inoculated. For this paper the same• technic was used to study the effect of x-radiation on tumor cells in suspension : first, to establish the lethal effect of equal doses of radiation on different concentrations of tumor cells; second, to deter mine the influence of radiation on the growth pe riod; third, to determine whether any radia...

Albino mice (Rockefeller NCS strain) raised and maintained free of ordinary bacterial pathogens, as well as of intestinal Escherichia coli and of Proteus bacilli, were found to be highly resistant to the lethal effect of bacterial endotoxins. When newborn mice of this NCS colony were nursed by foster mothers from another colony raised under ordinary conditions (SS colony from which the NCS colo...

The bioavailability of methylmercury (MeHg) in the brains of  orange spotted groupers, captured from four creeks of Mahshahr embayment was measured.  Then the effects of this pollutant on the regulation of gene expression, acetylcholinesterase transcript levels was chosen in order to monitor the amounts of methylmercury concentrations in the creeks, and the fluctuations of mRNA expressions in t...