The article focuses on a research conducted by scientist Gordana Vunjak-Novakovic and colleagues related to cell culture. According to the research, gels made of gelatin methacrylate and polydimethylsiloxane (PDMS) molds can be used to pattern cells in culture. It also mentions that the approach can be applied to determine the interactions in endothelial cells (ECs) and human mesenchymal stem cells (MSCs).