Detailed Instructions: In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
Problem: Some of these DNA : protein complexes were also present , but at lower levels , in nuclear extracts from untransformed rat cells suggesting the possible involvement of cellular factors in the mechanism of down - regulation mediated by Ad12 E1A .
Solution:
Ad12 E1A