A freezer malfunction at Children's Hospital Los Angeles resulted in the loss of 56 children's blood stem cells that were harvested at the beginning of each patient's oncology therapy and stored in the event they could prove useful in the future.
洛杉矶儿童医院冷冻机发生故障，导致 56 名儿童的血液干细胞损毁，这些干细胞是在每位患者开始进行肿瘤治疗时采集的，并加以储存，以备将来有用。