such sites were not detected in the dna of ( a ) wild type t4 irradiated with far uv ( 254 nm ) or ( b ) in t4 mutants in which non-glucosylated 5-hydroxy-methylcytosine ( 5hmc ) or cytosine replaces glucosylated 5hmc normally present in t4 , irradiated with 320 nm or 254 nm light .
C0049308
5
C0010843
cytosine