Toshio Nakamura

Identification and characterization of clinically isolated biofilm-forming gram-positive rods from teeth associated with persistent apical periodontitis.

K. Leung, H. Hayashi, T. Yamanaka, 2009, Journal of endodontics.

Biological Activities of Exopolysaccharides Derived from Prevotella nigrescens

T. Ikeo, T. Yamanaka, H. Fukushima, 2004 .