CELL CULTURE VESSEL PACKAGING BAG AND PACKAGE

It is an object of the invention to provide a cell culture vessel packaging bag that is capable of achieving both the reduction of the amount of adsorption of hydrogen peroxide to a cell culture vessel and the suppression of adverse effects of an oxidizing gas on cells or cell aggregates. Provided is a cell culture vessel packaging bag for including a cell culture vessel, the packaging bag being formed from two or more sheets of film arranged along the direction of gas permeation, in which the film is a laminated film including at least a base material layer in which at least one kind of micropores selected from through-holes and non-through-holes are formed, and a sealant layer, and the micropores are slit-shaped pores and are formed at a density of 1,000 to 10,000 per cm2 of the base material layer.