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PAGE analysis (2.4%) of DNA fragments from embryonic mouse liver. (A) Total cytoplasmic nucleic acid; (B) same after treatment with DNase; (C) same after treatment with RNase; (D) purified cytoplasmic DNA (after RNase treatment of total cytoplasmic nucleic acid and passage through Biogel P30 column; and (E) 141/2-day nuclear DNA. Reproduced with permission from Williamson (1970).
