Figure 4 of Barathi, Mol Vis 2009; 15:1277-1293.

Figure 4. Muscarinic receptor sub-types transcript levels in mouse sclera. The bar graph compares the relative gene expression of mouse scleral muscarinic receptor subtypes to the corresponding mouse brain mRNA level (range) after normalization with 18S rRNA internal standard. The mRNA level of M1, M3, and M4 in mouse sclera was less than in the mouse brain. However, the mRNA level of M2 and M5 was abundant in the mouse sclera.