Before revision: Northern blotting, a laboratory technique that produces similar information but is slower and less quantitative, however, produces an accurate information about the size of the target RNA.
After revision: They are also used to detect the presence of double stranded RNAs, presence of which coudl mean RNA interefrenceNorthern blotting, a laboratory technique that produces similar information but is slower and less quantitative, however, produces an accurate information about the size of the target RNA.