This biochemical defect correlated with a specific block to Oct-2 gene expression at the level of transcription , whereas the expression of Oct-1 was unaffected .
this biochemical defect correlated with a specific block to oct-2 gene expression at the level of transcription , whereas the expression of oct-1 was unaffected .
O O O O O O O O O B-protein_molecule O O O O O O O O O O O O B-protein_molecule O O O