Abstract: Provided is an ink composition for water-based ballpoint pens, which can provide excellent low-viewing angle visibility on a dark-colored writing surface and drawing lines with good luster. The ink composition for water-based ballpoint pens according to the present invention includes at least an aluminum pigment and titanium oxide-enclosing resin particles having an average particle size from 0.5 to 3 ?m.

Abstract: Provided is an ink composition for an aqueous ballpoint pen, the composition having excellent ink discharging performance even if a pen point is exposed for a long period of time. The ink composition for an aqueous ballpoint pen according to the present invention is characterized by containing at least from 1 to 35 mass % of titanium oxide having an average particle size of greater than 0.1 ?m and smaller than or equal to 1 ?m, and from 1 to 35 mass % of non-tacky urethane particles having an average particle size from 0.1 to 6 ?m.

Abstract: The present invention provides copper capillary alginate gels stabilized with barium, chitosan, its derivates, or a combination thereof. These stabilized gels are useful as scaffolds for containing, growing, or regenerating biological agents and cells for in vivo or in vitro use.

Abstract: The present invention provides copper capillary alginate gels stabilized with barium, chitosan, its derivates, or a combination thereof. These stabilized gels are useful as scaffolds for containing, growing, or regenerating biological agents and cells for in vivo or in vitro use.

Abstract: A method for identifying a drug candidate for promoting tissue-specific differentiation of a stem cell includes the steps of: providing a library of test substances and an in vitro culture of stem cells divided into at least two subcultures; contacting one of the subcultures with the first test substance from the library and a second subculture with a second test substance from the library; culturing the subcultures under conditions that would promote tissue-specific differentiation of the stem cells if an agent that promoted tissue-specific differentiation was in contact with the stem cells; and analyzing the cells in the subcultures for increased tissue specific gene expression.

Abstract: In an interactive processing system, a session between a terminal device and a task is not fixed, but can be changed to another session before it is completed. The interactive processing system stores information representing the session set for each of a plurality of users and the session to be processed by each of the terminal devices. This information is changed by the instruction from the terminal device. When an input-output operation is effected with a terminal device in the execution of a task, it is effected with the terminal device which is designated by the information.