cytoplasmic hybrids ( cybrids ) were prepared by fusion of bloom 's syndrome ( bs ) fibroblasts with cytoplasts derived from a chloramphenicol ( cap ) -resistant cell line of hypoxanthine phosphoribosyl transferase ( hprt ) -deficient chinese hamster wg3h cells to study the role of cytoplasmic and nuclear factors which may involve corrective factor ( s ) of sister chromatid exchanges ( sces ) of the bs cells .
C0010834
cytoplasmic
C0007634
cells