Progesterone (PROG) post-treatment ameliorates neurologic deficits after collagenase-induced ICH. (A) Progesterone post-treatment improved the neurologic function of mice on days 7, 14, 21, and 28 after ICH compared with that of the vehicle-treated group (n=12 mice/group, *p<0.05). (B) Neurologic deficit scores for each of the individual tests on days 1, 3, 7, 14, 21, and 28 after ICH (n=12 mice/group, all p>0.05). Values are means ± SD.