Fig. 4. Fold changes in stress response gene mRNA after hypoxic or isoflurane preconditioning. Hsf1 = hear shock factor 1; Hspb1 = heat-shock protein b1; Hspca = heat shock protein a (cytosolic); Nfkb1 = nuclear factor kappa b-1; HspcaI3 = heat-shock protein 90; PtgS2 = prostaglandin-endoperoxide synthase 2.  Numbers = indicate number of separate preconditioning experiments;  error bars = standard errors; *= at least a ±1.5-fold change; # = significant difference between hypoxia and isoflurane.