A Portable Live-Cell Imaging System With an Invert-Upright-Convertible Architecture and a Mini-Bioreactor for Long-Term Simultaneous Cell Imaging, Chemical Sensing, and Electrophysiological RecordingDhanesh Kattipparambil Rajan, Jukka Lekkala, Hannu Välimäki et al.|IEEE Access|2018Cited by 20