, Dcx+ neuroblasts in Tier 2 and 3 within DL-SVZ (A-C) and both of DL and V-SVZ (D). P value was determined by two-way ANOVA with Bonferroni comparisons. *p<0.05 vs Control and DHCA; †p<0.05 vs Control by unpaired Student’s t test. Data are shown as mean ± standard error of mean (n=4 each). Scale bar, 50μm. DHCA, deep hypothermic circulatory arrest; MSC, mesenchymal stromal cell; Dcx, doublecortin; DL-SVZ, dorsolateral-subventricular zone; V-SVZ, ventral-subventricular zone.