Abstract: A bottle includes a body, a cap mounted to a cap neck of the body. The cap has an outer peripheral portion which is provided with a protrusion. Around the cap, there is provided a position indicator indicating whether the cap is at a correctly closed position, based on the positional relationship between the protrusion and the position indicator.

Abstract: A bottle includes a body, a cap mounted to a cap neck of the body. The cap has an outer peripheral portion which is provided with a protrusion. Around the cap, there is provided a position indicator indicating whether the cap is at a correctly closed position, based on the positional relationship between the protrusion and the position indicator.

Abstract: The present invention addresses the problem of providing a means, whereby mesenchymal stem cells or adherent cells can be mass-cultured, while monitoring the cell state and strictly maintaining and controlling the same during the course of culture, to obtain cells in an amount as required for treatment of a disease, and can be homogeneously, economically, and efficiently harvested. The present invention also addresses the problem of providing a mass culture container capable of complying with a variety of demands for setting culture conditions; for example, coating of culture surface(s), combination(s) of various types of cells to be adhered to the culture surface(s), and so forth.