Aquinas High School juniors Rosalie Dang and Chelsea Rosario won first place in the 2nd Annual Columbia University Young Doctors Science Competition on Saturday, December 6, the school reports. Students were required to make a 3-D model of the digestive system and a poster board presentation of a disease of the digestive system. Rosalie and Chelsea’s 3-D model was life size and they focused on Zollinger-Ellison Syndrome, a disease which results in tumors that form in the pancreas and duodenum. Rosalie and Chelsea’s presentation included an interactive video component. The two girls are students in an AP Biology class.