TAKAHASHI S, TOKIWANO T, HATA K, KODAMA I, HOKARI M, SUZUKI N, YOSHIZAWA Y, GOTOH T. The Occurrence of Renin Inhibitor in Rice: Isolation, Identification, and Structure-Function Relationship. Bioscience, Biotechnology, and Biochemistry. 2010 Aug 23;74(8):1713–5. doi: 10.1271/bbb.100233.