ACTB and Hydrocephalus: The CD163 expression assessed by Western blotting was higher in SAH rats with hydrocephalus compared with sham-operated and with no hydrocephalus animals (CD163/β-actin: 1.43 ± 0.49 vs. 0.18 ± 0.05 in the control, p < 0.01; 0.25 ± 0.09 in hydrocephalus (–) animals, p < 0.01; Figure 6B).