The first describes the anti-mutagenic effect of some DNA polymerase mutations on phage T4 mutation rates, and discusses the implications they hold for the mechanism of action of DNA polymerase.

Phage T4 gene-32 protein was present at a concentration of 40 ng/μl (approximately 1142 nM), and phage ø29 DNA polymerase was added last at a concentration of 6.3 ng/μl (approximately 92 nM).