A: Immunostaining of the primary neurons culture for the neuronal marker MAP2 at day 10 in vitro (DIV 10).
B: Time dependent increased cell death with OGD. Lactate dehydrogenase (LDH) release into the supernatant increased in a time dependent manner after 3, 6, and 9 h of OGD. N=6. One-way ANOVA: *P<0.05 vs control and 3 h OGD, #P<0.05 vs 6 h OGD
C: C21 in different concentrations increased cell survival after 6 h OGD as measured by MTT assay. N=3–4. *P<0.05 vs OGD control