MARLBOROUGH, Mass.--(BUSINESS WIRE)--Advanced Cell Technology, Inc. (“ACT”; OTCBB: ACTC), a leader in the field of regenerative medicine, today announced treatment of the fourth patient, the first in the second patient cohort, in its U.S. clinical trial for Stargardt’s Macular Dystrophy (SMD). The surgery was performed on Wednesday, July 11 at Wills Eye Institute in Philadelphia, by a surgical team lead by Carl D. Regillo, MD, FACS, director of the Wills Eye Clinical Retina Research Unit, attending surgeon in the Wills Eye Retina Service at the Wills Eye Institute, and professor of ophthalmology at Thomas Jefferson University. In keeping with trial protocol, the patient was injected with 100,000 human embryonic stem cell-derived retinal pigment epithelial (RPE) cells, as compared with the 50,000 cell dose used in the three patients of the first cohort. The outpatient transplantation surgery was performed successfully and the patient is recovering uneventfully.