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