The researchers do not have direct evidence that people who carry the gene variant suffer from any cognitive or other adverse affects of low B12 levels.
研究人员目前还没有直接证据说明该基因变异会引起由低b 12水平引起的任何认知或其它反面的作用。
2
The cow-milk found in populations with a low incidence of type 1 diabetes has a much lower fraction of A1 and B betacaseins (instead they have the A2 variant).
A new diesel variant of the German brand's Panamera four-door model will arrive in Australia in September with official fuel consumption as low as 6.3 litres per 100km.