PEX5 and cystic fibrosis: To this end, we assessed the effects of CF on pexophagy in this rat model using immunohistochemistry for key pexophagy and steatosis markers as follows: the pexophagy receptor NBR1, selective autophagy receptor p62, pexophagy indicator Pex5, lysosomal indicator lysosome-associated membrane protein 2 (LAMP2), and adipose differentiation-related protein (ADRP).