One of the most life-threatening forms of stroke is intracerebral hemorrhage (ICH). This type of stroke is caused by bleeding that occurs within the brain tissue. Common causes of brain hemorrhage include brain tumors, brain trauma, and aneurysms. Effective treatment for patients suffering from intracerebral hemorrhage is lacking. The usefulness of various cell types to treat the effects of ICH continues to be studied. Bone marrow mononuclear cells are considered prime candidates for cell therapy for patients with ICH because they can be quickly collected and processed from bone marrow.