(5R)-5,6-dihydro-5-(thymidin-7-yl)thymidine in DNA = a thymidine dimer in DNA
(5r)-5,6-dihydro-5-(thymidin-7-yl)thymidine in dna = a thymidine dimer in dna
"spore photoproduct lyase"
"spore photoproduct lyase"