英语语法分析

Note: A: MS medium without apramycin; B: MS medium with apramycin.

注：A：不含安普霉素的MS培养基；B：含有安普霉素的MS培养基。

The clinical efficacy of apramycin sulfate and tylosin tartrate injection on diarrhea in calves was (observed) in 83 calves.

采用临床对比观察的方法，试验安泰粉针剂对83头犊牛腹泻的治疗效果。

To study the biosynthetics genes of apramycin in Streptomyces tenebrarius, the apramycin resistant gene was isolated by gunshot cloning firstly.

为了研究黑暗链霉菌安普霉素生物合成基因，首先通过鸟枪克隆的方法克隆其安普霉素抗性基因。