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Abstract Background A physiological small animal model that resembles COVID-19 with low mortality is lacking. Methods Molecular… Expand Significance There is evidence that the 2007−2010 drought contributed to the conflict in Syria. It was the worst drought in the… Expand Abstract The principal paleogeographic characteristics of North and Central Africa during the Paleozoic were the permanency of… Expand The prion diseases seem to be caused by a conformational change of the prion protein (PrP) from the benign cellular form PrPC to… Expand Studies in several species of rodents show that arginine vasopressin (AVP) acting through a V1A receptor facilitates offensive… Expand Abstract: This review summarizes the evidence showing that the duration of the nocturnal secretory profile of pineal melatonin… Expand 311 chemicals were tested under code, for mutagenicity, in Salmonella typhimurium; 35 of the chemicals were tested more than once… Expand A mutation has been found that dramatically shortens the period of the circadian locomotor rhythm of golden hamsters. The pattern… Expand Eight-cell embryos were recovered from mated golden hamsters that had been superovulated with pregnant mare's serum gonadotropin… Expand Epididymal spermatozoa of the golden hamster can be capacitated in vitro in the presence of oviduct fluid from the oestrous… Expand