PROBLEM TO BE SOLVED: To provide cell cryopreservation containers where adherence of cells to the inner wall surface of the container can be suppressed and the cells preserved in a preservation part can be tested readily.SOLUTION: The present invention provides a cell cryopreservation container comprising a preservation part capable of preserving a preservation liquid containing cells, and an inner wall surface which composes the preservation part, comprising an uneven surface having cell adhesion reduction properties on a part of the inner wall surface, and an observation part capable of observing, on the wall part, the cells which is preserved in the preservation part corresponding to at least a partial region of the inner wall surface except the uneven surface having the cell adhesion reduction properties. The inner wall surface of the observation part has a smooth surface, and the light transmittance of the observation part at 450 nm in water is 55% or more.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2017,JPO&INPIT【課題】本発明の目的は、容器の内壁面に細胞が接着することを抑制でき、かつ収容部に保存される細胞の検査を容易に行うことができる細胞凍結保存容器を提供することである。【解決手段】本発明は、細胞を含有する保存液を収容可能な収容部と、前記収容部を構成する内壁面と、を含む細胞凍結保存容器であって、前記内壁面の一部に細胞接着低減性を有する凹凸面と、前記細胞接着低減性を有する凹凸面以外の内壁面の少なくとも一部の領域に対応する壁部に、前記収容部に収容された前記細胞を観察可能な観察部と、を有し、前記観察部の内壁面が平滑面であり、かつ、前記観察部の水中における450nmでの光透過度が55%以上である、細胞凍結保存容器である。【選択図】図8
