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1·DOCTOR who sees a child with an odd appearance might write FLK in his notes.

面对一个长相奇特的孩子，医生会写下“FLK”的字迹。

2·VEGF and its receptor-FLK - 1 may be the target gene of UPR, suggesting a mechanism of homeostasis of HBMEC under stress.

推测VEGF及其受体FLK一1可能为UPR的靶基因，这可能是人脑微血管内皮细胞在应激状态下保持自身稳定性的一种机制。