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Sequence variation in the control region (D-loop) of the mitochondrial DNA (mtDNA) was examined to assess the genetic distinctiveness of the shortjaw cisco (Coregonus zenithicus). Individuals from within the Great Lakes Basin as well as inland lakes outside the basin were sampled. DNA fragments containing the entire D-loop were amplified by PCR from specimens of C. zenithicus and the related species C. artedi, C. hoyi, C. kiyi, and C. clupeaformis. DNA sequence analysis revealed high similarity within and among species and shared polymorphism for length variants. Based on this analysis, the shortjaw cisco is not genetically distinct from other cisco species. 相似文献
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MB Pliss NIa Iatskovskaia MP Gulich GI Solomko VF Solov'eva 《Canadian Metallurgical Quarterly》1996,(10-12):107-111
A testing was done in a chronic experiment on 300 rats and 360 mice of both sexes for carcinogenic potential of a new protein product from Saccharomyces yeast grown in melasse. The production procedures and techniques of the above product have been worked out at the Ukrainian Research Institute of Spirits and Biotechnology of Food Stuffs of Gospishcheprom (State Food Industry) of Ukraine. The studies made showed the new protein product has no carcinogenic effect. 相似文献
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