{TAIL ~ A method} for preparing interferon in which MRC 5 cells are induced for {HEAD ~ 2 to 3 hours} with an interferon inducing medium containing from 0.1 to 50mg 1 1 of a ds RNA, 100mg 1 1 of DEAE Dextran and 250 m.M of sucrose 
{ TAIL ~ A method } for preparing interferon in which MRC 5 cells are induced for { HEAD ~ 2 to 3 hours } with an interferon inducing medium containing from 0.1 to 50 mg 1 1 of a ds RNA , 100 mg 1 1 of DEAE Dextran and 250 m. M of sucrose
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