Differences in the Central Energy Metabolism of Cancer Cells between Conventional 2D and Novel 3D Culture Systems oleh Ryo Ikari, Ken-ichi Mukaisho, Susumu Kageyama, Masayuki Nagasawa, Shigehisa Kubota, Takahisa Nakayama, Shoko Murakami, Naoko Taniura, Hiroyuki Tanaka, Ryoji P. Kushima, Akihiro Kawauchi