Grain shape and size both determine grain weight and therefore crop yield.However,the molecular mechanisms controlling g......

利用聚合酶链反应特异性扩增编码乙型肝炎表面抗原羧基末端１２４个氨基酸的基因片段，并将其大肠杆菌中获得了高效表达。表达产物氨基末端......