Researchers at the Palmer Center for Chiropractic Research (PCCR) clinic facility, 741 Brady St., Davenport, on the campus of Palmer College of Chiropractic, are looking for 165 people in the Quad Cities with hypertension, or high blood pressure, to participate in a clinical research study with the potential for significant impact on the treatment of hypertension. Patient recruitment began in late November. Participants must have high blood pressure and be between 21 and 75 years of age.