To provide containers and methods for effectively avoiding foreign matters from entering a space in which a biological material is contained when opening the space.SOLUTION: A biological material container 10 comprises a container body member 20 having a bottom portion and a side wall portion 24, and a cover member 30 covering an opening of the container body member 20. A gap between an outer surface 24S1 of the side wall portion 24 of the container body member 20 and the cover member 30 is sealed. The biological material container 10 may be configured to further have a tube material 69 connected to a tubular member 61.SELECTED DRAWING: Figure 1

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