Abstract: An attachment that is detachably mounted to a cartridge mounting unit of a printing apparatus, the cartridge mounting unit including a liquid introduction portion that receives a liquid, and a restricting mechanism that restricts a rotation movement of an incompatible cartridge in a rotation mounting direction to be mounted by interfering with the incompatible cartridge, the attachment including a release portion that releases restriction by the restricting mechanism by pushing a part of the restricting mechanism in a pre-determined insertion direction, and a maintaining portion that maintains a mounted state of the attachment in cooperation with the cartridge mounting unit.

Abstract: A cartridge includes a first operation surface that receives a first load for moving the cartridge in an inserting direction, a main surface that constitutes a top surface positioned on a side of an upward direction in a direction of gravity in an inserted posture, a second operation surface that constitutes the top surface in an inserted posture and is positioned on a side of a downward direction in the direction of gravity with respect to the main surface and that receives a second load for moving the cartridge in a rotational-attachment direction, in which an angle formed by the second operation surface and the inserting direction is smaller than an angle formed by the first operation surface and the inserting direction.

Abstract: A liquid storage container includes: a liquid storage portion including a storage-portion outer shell for storing liquid inside; and an adapter including an adapter outer shell and an insertion opening that is formed in the adapter outer shell and into which a liquid introduction portion of a container attachment portion is inserted, the storage-portion outer shell has a first-type color in a degree that does not allow light to pass through the storage-portion outer shell, and the adapter outer shell has a second-type color having a color difference with respect to a color of the liquid larger than or equal to a threshold.

Abstract: The cartridge includes a liquid containing portion containing a liquid, a liquid supply portion, an arrangement portion having a bottom wall in which an opening through which the liquid introduction portion is inserted is formed, and a film peelably attached to the arrangement portion while covering the opening portion, in which the arrangement portion further has a mounting element cooperating with the printing apparatus, and the film is arranged at a position where the film is interposed between the printing apparatus and the mounting element when a mounting process is performed in a state in which the film is attached to the arrangement portion.

Abstract: A cartridge including a first guide rib and a second guide rib that extend in the Y direction and project outward in the X direction. In an attachment state in which a cap is attached to the cartridge, the cap includes a sealing wall having a liquid holding portion that faces the liquid supply portion, a first projecting rib projecting in a direction opposite to a projecting direction of the first guide rib, a second projecting rib projecting in a direction opposite to a projecting direction of the second guide rib, a first recessed portion that is formed between the sealing wall and the first projecting rib and accommodates the first guide rib, and a second recessed portion that is formed between the sealing wall and the second projecting rib and accommodates the second guide rib.

Abstract: A method of identifying a compound for preventing and/or treating an autoimmune disease is described which comprises obtaining a (BTLA?/?) NKT cell from a non-human animal, contacting the (BTLA?/?) NKT cell ex vivo with a test compound, in the presence of an antigen, measuring a response of the (BTLA?/?) NKT cell to the antigen, comparing the response of the (BTLA?/?) NKT cell to the antigen with a response of a (BTLA?/?) NKT cell in control assay, and selecting the compound that reduces the response of the (BTLA?/?) NKT cell in the presence of an antigen compared to a response of a (BTLA?/?) NKT cell in the control assay. Other methods of identifying a compound for preventing and/or treating an autoimmune disease are also described.

Abstract: A method of identifying a compound for preventing and/or treating an autoimmune disease is described which comprises obtaining a (BTLA?/?) NKT cell from a non-human animal, contacting the (BTLA?/?) NKT cell ex vivo with a test compound, in the presence of an antigen, measuring a response of the (BTLA?/?) NKT cell to the antigen, comparing the response of the (BTLA?/?) NKT cell to the antigen with a response of a (BTLA?/?) NKT cell in control assay, and selecting the compound that reduces the response of the (BTLA?/?) NKT cell in the presence of an antigen compared to a response of a (BTLA?/?) NKT cell in the control assay. Other methods of identifying a compound for preventing and/or treating an autoimmune disease are also described.