Abstract: A disposable pant type undergarment includes a ventral member, a dorsal member and a crotch member that bridges the ventral member and the dorsal member. A crotch edge of the ventral member and the dorsal member each includes right and left edge lines, right and left tilted lines and a central line. The edge lines are approximately parallel in a waist-around direction. Nearer the central line, a distance between a waist opening of the undergarment and the tilted lines of the ventral member is shorter, and a distance between the waist opening and the tilted lines of the dorsal member is longer. Tilted portions of a leg-surrounding elastic body extend in a leaving direction from the crotch edge of the ventral member and extend into an area overlapped with the ventral member and the crotch member.

Abstract: A disposable undergarment includes a ventral member and a dorsal member that are bonded to each other at both bonded portions, a crotch member that is bonded to and bridges between both center portions of the ventral member and the dorsal member, a waist opening, left and right leg openings, and a first elastic member that extends upward toward an upper edge from lower portions of the bonded portions of the ventral member to a center in a waist-around direction. The disposable undergarment has a shape widening from the waist opening toward the left and the right leg opening on a lower side. The upper edge of the ventral member has a center portion disposed lower than an upper edge of the dorsal member.

Abstract: A disposable pant type undergarment includes a ventral member, a dorsal member and a crotch member that bridges the ventral member and the dorsal member. A crotch edge of the ventral member and the dorsal member each includes right and left edge lines, right and left tilted lines and a central line. The edge lines are approximately parallel in a waist-around direction. Nearer the central line, a distance between a waist opening of the undergarment and the tilted lines of the ventral member is shorter, and a distance between the waist opening and the tilted lines of the dorsal member is longer. Tilted portions of a leg-surrounding elastic body extend in a leaving direction from the crotch edge of the ventral member and extend into an area overlapped with the ventral member and the crotch member.

Abstract: A polymer that changes hydration at a temperature between 0 to 80° C. is coated on the surface of a cell culture support, and islet cells are cultured on the support at a temperature range that causes polymer to have weak hydration, then the temperature of a culture solution is changed to a temperature that causes the polymer to have strong hydration to obtain islet cells in a sheet form. Such islet cells in a sheet form have an insulin producing function even if there is no blood flow.