Comparing direct-to-consumer genetic testing services in English, Japanese, and Chinese websites

TIMOTHY CAULFIELD, KATSUSHI TOKUNAGA, RYUMA SHINEHA, ALESSANDRO R. MARCON, KENTARO NAGAI, Mizuho Tanaka, YASUKO TAKEZAWA

HLA and Human Mate Choice. Tests on Japanese Couples.

KENICHI AOKI, Yasuo Ihara, Takeo Juji, KATSUSHI TOKUNAGA, K. Takahashi

Brief communication: Mitochondrial DNA variation suggests extensive gene flow from Polynesian ancestors to indigenous Melanesians in the northwestern Bismarck Archipelago

JUN OHASHI, IZUMI NAKA, KATSUSHI TOKUNAGA, TSUKASA INAOKA, YUJI ATAKA, Minato Nakazawa, YASUHIRO MATSUMURA, Ryutaro Ohtsuka • 2006

HLA‐DRB1 frequencies of non‐Austronesian‐speaking Gidra in south New Guinea and their genetic affinities with Oceanian populations

Maki Yoshida, Ryutaro Ohtsuka, Minato Nakazawa, Takeo Juji, KATSUSHI TOKUNAGA • 1995