Natural animal origin component such as fundamental nutrient medium and serum offer of the cell retention service water solution which is not included is designated as topic. Excluding natural animal origin component such as fundamental nutrient medium and serum, the other components and adjusting density depending, you obtained the retention service water solution which shows high cell survival ratio.基礎培地、血清等の天然の動物由来成分を含まない細胞保存用水溶液の提供を課題とする。基礎培地、血清等の天然の動物由来成分を除き、その他の成分及び濃度を調整することよって高い細胞生存率を示す保存用水溶液を得た。