About OKA K
About Toho Univ., Tokyo
About TAKEDA N
About Toho Univ., Funabashi
About Comparative Biochemistry and Physiology. A. Molecular & Integrative Physiology
About Hirudinea
About nerve cell
About Central nervous system
About Reproductive(=genital)organs
About ヒル
About 神経分泌
About 精子形成