Living cell cryopreservation tool

A living cell cryopreservation tool comprising:

• a living cell holding member having a body part and a living cell holding part projecting from said body part toward the distal side of said living cell holding member;
• an accommodation tube capable of accommodating said living cell holding member;
• wherein said body part and said living cell holding part are formed of a liquid nitrogen-resistant synthetic resin;
• said accommodation tube has a tubular body formed of a liquid nitrogen-resistant synthetic resin;
• said living cell holding part of said living cell holding member has a living cell attaching and holding portion extending in a longitudinal direction of said living cell holding member;
• said living cell attaching and holding portion has a first metal heat conductor extending in a longitudinal direction thereof and provided at one side or both sides of said living cell attaching and holding portion;
• said first metal heat conductor has a projecting distal portion projecting from a distal end of said living cell holding part;
• said accommodation tube has a second metal heat conductor provided to a distal end portion of said tubular body and a distal-end closed portion to prevent cooling medium from entering;
• said second metal heat conductor is a columnar metal heat conductor and has a surface for contact with said projecting distal portion of said first metal heat conductor;
• and
• when said living cell holding member is accommodated in said accommodation tube from said projecting distal portion side, said projecting distal portion of said first metal heat conductor contacts said surface of said second metal heat conductor in said accommodation tube.