Figure 3. Diagram of experimental design and physiological parameters in periodic 17β-estradiol treated OvX female rats.

(A) The OvX rats were given injections of 17β-estradiol or oil at 48 or 72 h intervals. Arrows indicate days that the rats received injections. Control rats were not OvX and did not receive any injections. (B) Pictures of vaginal histology in oil and E₂ treated (48 hr) groups. Arrows show (<$>\raster(70%)="rg1"<$>) neurtrophils and (<$>\raster(75%)="rg2"<$>) superficial (acidophilic and basophilic). (C) The graph represents the plasma E₂ levels 48/72 hrs after the last bolus of E₂. (D) The graphs depict physiological data and arterial blood gases before and after cerebral ischemia.