医生在显微镜下观察到了大量未成熟的淋巴母细胞。

The doctor observed a large number of immature ___lymphoblastic cells under the microscope.

血液检测显示淋巴母细胞异常增多，医生怀疑可能是白血病。

The blood test revealed an abnormal increase in ___lymphoblastic cells, raising suspicion of leukemia.