Fig. 4From: Exploring miRNAs involved in blue/UV-A light response in Brassica rapa reveals special regulatory mode during seedling developmentNorthern blot analysis of BrmiR156, BrmiR167 and BrmiR159 in seedlings of Tsuda after exposure to dark, blue light or UV-A. 5′-Digoxigenin-labeled DNA oligonucleotide with complementary sequence to miRNA was used as the probe; BrU6 was used as the control. The gray level ratio between miRNAs and BrU6 was used to compare relative expression to normalized readsBack to article page