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Heat maps illustrating differences between in-line probing (left) and shape (right) analysis of the yeast asp-tRNA. Nucleotides are colored corresponding to cumulative activities described in Figure 3, where the least reactive 
of bases are black (
of bases are paired in the crystal structure), the most reactive 
of bases are red, and the next most reactive 
are yellow. Gray bases are bases for which there is no data available.
