Microfluidic Chip 1 (IMAGE) Johns Hopkins University Caption Andre Levchenko (left), a Johns Hopkins assistant professor of biomedical engineering, and Saurabh Paliwal, a doctoral student, used a microfluidic chip to help solve a biological mystery concerning the mating behavior of yeast cells. Credit Will Kirk/JHU Usage Restrictions None 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.