The spleen cells taken from Balb/ cJ mice 3 days after immunization with PDRBC were fused with NS-1 myelo-ma cells by two different procedures in the presence of PEG.

• 以北京鸭红血球为抗原免疫Balb/cJ小鼠,三天后取脾细胞与小鼠NS-1骨髓瘤细胞在PEG作用下,用两种方法进行细胞融合。