WB; IH, Frozen; Western blotting (1:5,000) and Immunohistochemistry (1:1,000). Due to the highly hydrophobic nature of rhodopsin, avoid boiling samples in SDS-PAGE sample buffer for rhodopsin analysis by Western Blotting, as this will result in extensive aggregation of the rhodopsin protein and appearance of high molecular weight bands. Biosensis recommends optimal dilutions/concentrations should be determined by the end user.