Fig. 4.
Selection of RNA-ligand interactions on an array. A left, image of an array after hybridization with an RNA motif library. (a, right ) Image of the array after the six indicated positions are excised. (b) Gel analysis of RT-PCR reactions completed with the samples that were excised. The plus indicates RT-PCR reactions in the presence of RT while the minus indicates RT-PCR reactions in the absence of RT.