Mean intestinal fluorescence of hsp-6::gfp in L4 stage animals incubated at continuous 21% oxygen at 20°C. For all panels, statistical significance was calculated using one-way ANOVA followed by Tukey’s multiple comparison test. Error bars represent standard deviation. n.s., not significant,*p value < 0.05,**p value < 0.01,***p value < 0.001. See also Figure S2 and Table S2.