Clarkson University 2 articles published in JoVE Developmental Biology A Direct and Simple Method to Assess Drosophila melanogaster's Viability from Embryo to Adult Antonio L. Rockwell1, Isabel Beaver1, Cintia F. Hongay1 1Department of Biology, Clarkson University This protocol is designed to assess the viability of Drosophila at every developmental stage, from embryo to adult. The method can be used to determine and compare the viability of different genotypes or growth conditions. Bioengineering Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp Kelley C. Stewart1, Byron D. Erath2, Michael W. Plesniak1 1Department of Mechanical and Aerospace Engineering, The George Washington University, 2Department of Mechanical and Aeronautical Engineering, Clarkson University Vocal fold polyps can disrupt vocal fold dynamics and thus can have devastating consequences on a patient's ability to communicate. Three-dimensional flow separation induced by a wall-mounted model polyp and its impact on the wall pressure loading are examined using particle image velocimetry, skin friction line visualization, and wall pressure measurements.