Figure 1.

microRNAs and their scrambled counterparts interact differently with the population of human mRNAs. Shown are all exact hits ≥ 10 bases long (not counting G:U matches) produced on human RefSeq mRNAs by the set of nonredundant microRNAs, vs. the average of 10 replications of scrambled control sequences. Shown is the number of hits as a function of exact hit length. Only the longest hit was counted: e.g., for a hit of length 18, the two subsets of length 17 in the same hit position were not counted.