5-methylcytosine sythesis , therefore , appears to follow dna synthesis during hydrazine toxicity , and formation of 7-methylguanine and o6-methylguanine in liver dna of hydrazine-treated rats occurs during a short period of increased dna sythesis and 5-methylcytosine formation very early in hydrazine toxicity .
C0598312
dna synthesis
C0012854
dna