these results and the data on uv sensitivity of the mutants indicate that ( 1 ) the products of all these rec genes are related to uv resistance of the cell viability and are factors functioning through mechanisms other than excision repair , ( 2 ) the products of reca , recb and rec-4 genes display some roles in maintenance of a level of excision repair activity , and ( 3 ) the product of the rec-80 gene does not participate at all in excision repair .
C0007620
cell
C0015249
excision repair