part of part_of derives from derives_from immortal plasma cell line cell 永生的浆细胞系细胞 immortal organism part-derived plasma cell line cell 永生的生物部分衍生的浆细胞系细胞 An immortal plasma cell line cell that derives from organism part. Yue Liu, Yongqun He 源自生物体部分的永生浆细胞系细胞。 organism part 生物体一部分