Second , tyrphostin , a tyrosine kinase inhibitor , impaired the expression of the first but not the second junB mRNA peak .
second , tyrphostin , a tyrosine kinase inhibitor , impaired the expression of the first but not the second junb mrna peak .
O O B-other_organic_compound O O B-other_organic_compound I-other_organic_compound I-other_organic_compound O O O O O O O O O O O B-RNA_molecule I-RNA_molecule O O