Abstract: A culture container includes: a culture container body; a partition plate disposed in the vicinity of a bottom of the culture container body to face the bottom so that a culture region is formed as a culture region between the partition plate and the bottom; and a sample inlet/outlet provided in the culture container body, the culture region and the sample inlet/outlet communicating with each other via an opening formed adjacent to one end of the partition plate. With the culture container and a culture method using this container, a large amount of adipocytes can be cultured at one time with easy handling. Dedifferentiation of a large amount of adipocytes and removal of cells having failed to dedifferentiate can be efficiently accomplished.

Abstract: A culture container includes: a culture container body; a partition plate disposed in the vicinity of a bottom of the culture container body to face the bottom so that a culture region is formed as a culture region between the partition plate and the bottom; and a sample inlet/outlet provided in the culture container body, the culture region and the sample inlet/outlet communicating with each other via an opening formed adjacent to one end of the partition plate. With the culture container and a culture method using this container, a large amount of adipocytes can be cultured at one time with easy handling. Dedifferentiation of a large amount of adipocytes and removal of cells having failed to dedifferentiate can be efficiently accomplished.

Abstract: It is a problem of the present invention to provide a convenient and safe periodontal tissue regeneration material and provide a method of regenerating a periodontal tissue. The present invention provides a periodontal tissue regeneration material comprising dedifferentiated fat cells (DFAT) as the convenient and safe periodontal tissue regeneration material. The present invention provides a method of regenerating a periodontal tissue with the periodontal tissue regeneration material.

Abstract: A sugar donor having a glucuronic acid or iduronic acid derivative at the reducing end and in which a leaving group is added to the reducing end hydroxyl group to be glycosylated and the other hydroxyl groups and the carboxyl groups are protected, is subjected to glycosylation reaction with a sugar acceptor having a N-acylgalactosamine derivative at the reducing end and in which the non-reducing end hydroxyl group to be glycosylated is free and the other hydroxyl groups are protected, in the presence of (A-3) a particular promoter. Provided be can a process for preparing an oligoglycosaminoglycon of an intended chain length composed of four or more constituent sugars in highly stereoselectively, high yield and high purity.

Abstract: Indolo[2,3-b]quinoxaline derivatives represented by the following formula: ##STR1## wherein one of R.sup.1 and R.sup.2 is a hydrogen atom and the other is a group of the formula:--CH.sub.2 NHCCH.sub.3 (CH.sub.2 OH).sub.2,etc, and R.sup.3 is a hydrogen atom, a methyl group, etc.; and pharmaceutically acceptable salts thereof have an antitumor activity and are useful as medicines.