According to the present invention, a syringe for cryopreservation of cells, a nucleic acid, or a protein comprising: a barrel having a spout and an opening and for containing cells, a nucleic acid, or a protein; a gasket slidably accommodated in the barrel; a plunger connected to the gasket; and a cap that seals the spout of the barrel, wherein the barrel is formed from a fluororesin, and the gasket is formed from a fluororesin or a polyethylene resin. The syringe is excellent in usability, durability, and safety.

A cryopreservation container 100 includes a cap 3 having a first engagement portion 10 and a body 2 having a second engagement portion 20 at an insertion portion 5. The insertion portion 5 has a biological material loading portion 6, on which a biological material is loaded, at the distal end. The biological material loading portion 6 is housed in a housing 7 defined by the cap 3 and the insertion portion 5 when the insertion portion 5 is inserted through the opening 3b of the cap 3. At this time, the force generated when the first engagement portion 10 and the second engagement portion 20 are engaged with each other enables easy recognition that the cap 3 is successfully joined to the body 2.