Biological cell cryopreservation tool and biological cell cryopreservation tool

摘要

The living cell cryopreservation tool 1 includes a body portion 2 made of a cold-resistant material and a living cell holding portion 3 made of a cold-resistant material. The biological cell holding unit 3 includes a light-transmissive base unit 31 and a water absorbing unit 32 fixed to the surface of the base unit 31. The water absorbing portion 32 includes a defective portion 33 surrounded by the water absorbing portion 32, and in the defective portion 33, the surface of the base portion 31 is exposed and is light transmissive.