Abstract: Provided are a cell population substantially consisting of mammalian cells that are positive for cell surface markers CD31 and CD200 and negative for CD45; a cell population substantially consisting of mammalian cells that are positive for cell surface markers CD31, CD157 and CD200 and negative for CD45; a mammalian vascular endothelial stem cell that is positive for the cell surface marker CD31, positive for at least one of CD157 and CD200, and negative for CD45; and a medicament for vascular regeneration, comprising any of the cell populations or the vascular endothelial stem cells as an active ingredient.

Abstract: A cooling method for a workpiece includes placing entirety of the workpiece in an inner space of a recess provided on a molding surface of a lower mold, pressing or restraining the workpiece by a mold including the lower mold and an upper mold in which a protrusion corresponding to the recess of the lower mold is provided on a molding surface, supplying a liquid coolant to the inner space of the recess through a coolant supply passage provided in at least one of the lower mold and the upper mold by a pump, and discharging air in the inner space of the recess upward through an air escape passage, and cooling the workpiece by immersing the entirety of the workpiece, which has been heated, in the liquid coolant that fills the recess.

Abstract: In a mold, at least one of a lower mold and an upper mold includes a coolant supply passage through which a liquid coolant is supplied to an inner space of a recess, and the mold includes an air escape passage through which air in the inner space of the recess is discharged upward.

Abstract: A cooling method for a workpiece includes placing entirety of the workpiece in an inner space of a recess provided on a molding surface of a lower mold, pressing or restraining the workpiece by a mold including the lower mold and an upper mold in which a protrusion corresponding to the recess of the lower mold is provided on a molding surface, supplying a liquid coolant to the inner space of the recess through a coolant supply passage provided in at least one of the lower mold and the upper mold by a pump, and discharging air in the inner space of the recess upward through an air escape passage, and cooling the workpiece by immersing the entirety of the workpiece, which has been heated, in the liquid coolant that fills the recess.

Abstract: In a mold, at least one of a lower mold and an upper mold includes a coolant supply passage through which a liquid coolant is supplied to an inner space of a recess, and the mold includes an air escape passage through which air in the inner space of the recess is discharged upward.

Abstract: A three-dimensional image-forming toner containing at least a binder resin and a foaming agent in such a manner that the foaming agent is not substantially exposed to the surface of the toner. The foaming agent is preferably microcapsule particles containing a low-boiling substance such as, preferably, isobutane, and the shell material of the microcapsule is preferably a copolymer of vinylidene chloride and acrylonitrile.By using the image-forming toner, a three-dimensional image having a sufficient image thickness for being recognized as Braille types and a good fixing property to a recording medium such as a plain paper can be easily formed using an ordinary electrophotographic copying machine or printer.