1. Healthy Vinegar and Anti-oxidants
   Koji YAMADA et al, 2018, JOURNAL OF THE BREWING SOCIETY OF JAPAN CrossRef
2. Effect of Tea Extracts and Phenolic Components on Immunoglobulin Production by Mesenteric Lymph Node Lymphocytes of Sprague-Dawley Rats.
   Koji YAMADA et al, 1997, Food Science and Technology International, Tokyo CrossRef