Abstract: A rear structure of a car body includes: a rear pillar extending vertically at the rear part of the car body; a member extending from a vertically middle position of the rear pillar to the front side of the car body; a rear wheel housing disposed at a lower side of the member; and a stiffener having a lower end coupled to the rear wheel housing and an upper end coupled to the member. At least in a rear part of the member to which the upper end of the stiffener is coupled, a rear lower end of the rear part is sloped so that the rear lower end can be higher than a front lower end of the rear part.

Abstract: A rear structure of a car body includes: a rear pillar extending vertically at the rear part of the car body; a member extending from a vertically middle position of the rear pillar to the front side of the car body; a rear wheel housing disposed at a lower side of the member; and a stiffener having a lower end coupled to the rear wheel housing and an upper end coupled to the member. At least in a rear part of the member to which the upper end of the stiffener is coupled, a rear lower end of the rear part is sloped so that the rear lower end can be higher than a front lower end of the rear part.

Abstract: [Problem] Provided are a method of maintaining/expanding hematopoietic stem cells, a hematopoietic stem cell population obtained by the method, a hematopoietic function ameliorating agent based on administration of the hematopoietic stem cell population to a living organism, and the like. [Solving Means] A method of maintaining/expanding hematopoietic stem cells, comprising culturing hematopoietic stem cells in the presence of the HSC activity supporting factor of the present invention, which comprises the same or substantially the same amino acid sequence as an amino acid sequence shown by SEQ ID NO:2 or 4, or in the co-presence of a mammalian cell, preferably a stromal cell, incorporating an expression vector harboring a nucleic acid that encodes the HSC activity supporting factor, a cell population containing expanded hematopoietic stem cells obtained by the method, and a hematopoietic function ameliorating agent comprising the cell population.