Magnetic Marker and High Tc Superconducting Quantum Interference Device for Biological Immunoassays. - Keiji Enpuku; Katsuhiro Inoue; Kohji Yoshinaga; Akira Tsukamoto; Kazuo Saitoh; Keiji Tsukada; Akihiko Kandori; Yoshinori Sugiura; Shigenori Hamaoka; Hiroyuki Morita; Hiroyuki Kuma; Naotaka Hamasaki (IEICE Trans. Electron., 2005)