nbl

Objective : To establish purified culture system of dorsal root ganglion ( DRG ) cells derived from embryonic rats in NBl media .

目的：在NB1培养基中建立体外胚胎大鼠背根神经节（DRG）细胞的纯化培养体系。

The adult worm , L1 ( muscular larvae ) and NBL ( newborn larvae ) were freeze thawed repeatedly .

将旋毛虫成虫、肌肉期幼虫（L1）和新生幼虫（NBL）反复冻融，前两者再经超声粉碎。

The SDS-PAGE patterns of NBL somatic constituents consisted of about 40 polypeptide bands , which were obviously different from those of adult and muscle larva .

NBL虫体组分经SDS-PAGE分离出约40条区带，与成虫和肌肉期幼虫的电泳图谱明显不同。

Methods Prenatal ultrasound examination was performed in 1415 normal fetuses . The nasal bone length ( NBL ) and the nasal bone angle ( NBA ) were measured on the mid-sagittal plane .

方法产前超声检测1415例正常中、晚孕期胎儿，在胎儿头部正中矢状切面行鼻骨长度和鼻骨角度（鼻骨与额骨延长线夹角）的超声测量，得出各孕周正常值范围。