Additional file 1. The effect of HS and DAPT on BV-2 cell viability.ppt. Panel A shows 40 mM HS, 60 mM HS, and 80 mM HS have no significant effect on BV-2 cell viability compared to OGD group (P > 0.05); but the BV-2 cell viability was significantly decreased in 100 mM HS (*P 0.05). The values represent the mean ± SD in triplicate. HS, hypertonic saline; DAPT, N-[N-(3,5-difluorophenacetyl)-1-alanyl]-S-phenylglycinet-butyl ester; OGD, oxygen glucose deprivation. ns, no significant difference.