Fig. 6
From: Vitamin A bio-modulates apoptosis via the mitochondrial pathway after hypoxic-ischemic brain damage
The apoptosis rate of primary neurons injured by OGD at different RA receptor levels. a Flow cytometry for apoptosis in primary hippocampal neurons at different RA receptor levels. The UR (upper right) and LR (lower right) quadrants represent apoptotic cells. b A comparison of apoptosis rates for the different RA receptor levels. The data are expressed as the means ± SEM, N = 5, *P ≤ 0.05, **P ≤ 0.01