下图表示格里菲思做的肺炎双球菌转化实验的部分实验过程,s型菌有荚膜且具有毒性,能使人患肺炎或使小鼠患败血症,r型菌无荚膜也无毒性。相关说法错误 Template




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tomski下图表示格里菲思做的肺炎双球菌转化实验的部分实验过程,s型菌有荚膜且具有毒性,能使人患肺炎或使小鼠患败血症,r型菌无荚膜也无毒性。相关说法错误 coloring