Figure 2 of Sharif, Mol Vis 2013; 19:1356-1370.

Figure 2. Localization of B2-receptor immunoreactivity in ocular tissues of human and cynomolgus monkey eyes. Section A shows robust labeling of human ciliary muscle (h-CM) fibers and NPCE cells, while section B is the negative control (IgG control) for human eye sections. The labeling of monkey CM fibers and NPCE cell B2 receptors is evident in section C. Once again, no specific labeling was observed in the IgG control section of the monkey eye (section D). The scale bar shown in D (100 μm) applies to all the figures.