Duksung Women's University 2 articles published in JoVE Behavior Applying an eMASS Customization Program as a Research Tool to Evaluate Consumer Benefits Minjung Park*1, Jungmin Yoo*2 1Department of Fashion Industry, Ewha Womans University, 2 Presented here is a protocol to examine consumer responses toward mass customization in the context of online retailing. The protocol details the online survey procedure and how to analyze data using structural equation modeling and group differences using latent mean analyses. Developmental Biology Three-dimensional Angiogenesis Assay System using Co-culture Spheroids Formed by Endothelial Colony Forming Cells and Mesenchymal Stem Cells Sajita Shah*1, Hyunsook Lee*1, Young Hwan Park1, Eunkyeong Jeon1, Hye Kyung Chung2, Eun Sang Lee2, Jae Hoon Shim2, Kyu-Tae Kang1 1 Three-dimensional co-culture spheroid angiogenesis assay system is designed to mimic the physiologic angiogenesis. Co-culture spheroids are formed by two human vascular cell precursors, ECFCs and MSCs, and embedded in collagen gel. The new system is effective for evaluating angiogenic modulators, and provides more relevant information to the in vivo study.