Kohjin Bio Co., Ltd. engages in the manufacture and sale of animal blood, serums, tissue culture media and other products. It operates through the following business segments. Tissue Culture Business, Microbiology Business and Cell Processing Business. The Tissue Culture business segment engages in the manufactures, and sale of tissue culture media, including serum free media used for research purposes in regenerative medicine and immunotherapy. The Microbiology business segment develops, manufactures, and sells a wide variety of microorganism detection media used for pathogen testing in the clinical and food fields, and quality testing in various fields such as pharmaceuticals and cosmetics. The Cell Processing business segment conducts cell processing operations under contract from medical institutions. The company was founded by Takato Nakamura in April 1981 and is headquartered in Sakado, Japan.