Genetic Research Conducted in Ethiopia (IMAGE) Cell Press Caption This image shows Sheko men taking part in a lactose tolerance test during a study by the Tishkoff Lab in Ethiopia. Credit Tishkoff Lab Usage Restrictions Credit Required License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.