Figure 1 of Penha, Mol Vis 2011; 17:1436-1448.

Figure 1. Northern blot showing the expression pattern of the insulin receptor mRNA (probe 1) in the liver (L), brain (B), and different fundal ocular layers: the retina (R), choroid (Ch), and retinal pigment epithelium (RPE). Three major transcripts with 4.3, 2.6, and 1.3 kb were found, although the pattern was different among the studied tissues.