Figure 4. Expression of Glb-related genes in the eye. Specific cDNA products for Glb1 (92 bp), Glb1l (368 bp), and Glb1l2 (523 bp) were ubiquitously expressed in the different ocular tissues, whereas expression of Glb1l3 transcript (363 bp) was restricted to the retina and the RPE/choroid. Rl8 mRNA expression (198 bp) was used as an internal standard. Molecular weight (MW), DNA ladder in base pairs (bp).