Three mutually reinforcing mutations, M42, M94 and M139 (two transversions and a 1-bp deletion), distinguish haplogroup I, which is represented today by a minority of Africans—mainly Sudanese, ...
Biochrom's WPA S1200 + visible spectrophotometer has been designed to meet the routine spectroscopy needs of customers requiring a small, lightweight instruments that is easy to use. Although compact, ...
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