You set the fracture, you drew the blood, you spun the blood, looked at it under the microscope, you plated the culture, you injected the antiserum.

你处理骨折，抽血验血，用显微镜观察，片，注射抗血清。

You might have a lobar pneumonia, for example, and they could give you an antiserum, an injection of rabid antibodies to the bacterium streptococcus, if the intern sub-typed it correctly.

比如说，你患有大叶性肺炎，医生对你进行抗血清治疗，为你注射狂犬病抗体此对抗链球菌，前提是实习医生分类正确。