Microengineering of Collagen Hydrogels Integrated into Microfluidic Devices for Perfusion Culture of Mammalian CellsMisaki Kato, Mayu Fukushi, Masumi Yamada, Rie Utoh and Minoru SekiMATEC Web Conf., 333 (2021) 07006DOI: https://doi.org/10.1051/matecconf/202133307006