Figure 5
![Figure 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1423-0127-19-4/MediaObjects/12929_2011_Article_351_Fig5_HTML.jpg)
The expressions of ER stress chaperones. Upregulation of mRNA and protein expression of Bip, PERK and CHOP were caused by hypoxia in the testes and were attenuated by CPU86017-RS and Nif. A, Bip mRNA; B, Bip protein; C, PERK mRNA; D, PERK protein; E, CHOP mRNA; F, CHOP protein. Mean ± SD, n = 10. *P < 0.05, **P < 0.01, vs. Normal; #P < 0.05, # #P < 0.01, vs. Hypoxia, $P < 0.05, vs. H+RSL (hypoxia + RS low dose).