本文采用Okamura氏的寡聚脱氧胸苷酸(oligo-dT)-纤维素柱层析法分离纯化小牛胸腺末端脱氧核苷酸转移酶(TdT)。
Present paper used Okamura 's method of oligo dT-cellulose affinity chromato - . graphy to isolate and purify terminal deoxynucleotidyltransferase ( TdT ) from calf thymus . The procedure consists of : extraction of crude enzyme ;