Flow Cytometric Analysis of Cellular Berberine Contents in High- and Low-Producing Cell Lines of Coptis japonica Obtained by Repeated Selection - Hara, Yasuhiro; Yamagata, Hikaru; Morimoto, Teijiro; Hiratsuka, Junzo; Yoshioka, Toshihiro; Fujita, Yasuhiro; Yamada, Yasuyuki (Planta Medica, 1989)