with a sensitive uds assay procedure a ( transient ) increase in uv-induced uds level was found in fibroblasts from all complementation groups after injection of extracts from repair-proficient ( hela ) or complementing xp cells ( except in the case of xp-g ) , but not after introduction of extracts from cells belonging to the same complementation group .
C0016030
fibroblasts
C0007634
cells