The present invention relates to a method for removing undifferentiated embryonic stem cells. In particular, the present invention relates to a method for removing undifferentiated embryonic stem cells by using cardiac glycosides (CGs). The present invention also relates to a method for preparing differentiated cells in which undifferentiated embryonic stem cells have been removed and a method for cell therapy by using such differentiated cells.

The invention provides an associative polymer, a powder, and a process for making a powder including, networking one or more associative polymers and one or more optional surfactants to form a wet gel, and forming a powder from the wet gel, wherein the associative polymer(s) have a weight average molecular weight of from about 10 kDa to about 2,000 kDa.

The invention provides an associative polymer, a powder, and a process for making a powder including, networking one or more associative polymers and one or more optional surfactants to form a wet gel, and forming a powder from the wet gel, wherein the associative polymer(s) have a weight average molecular weight of from about 10 kDa to about 2,000 kDa.

The invention provides an associative polymer, a powder, and a process for making a powder comprising, networking one or more associative polymer(s) and one or more optional surfactant(s) to form a wet gel, and forming a powder from the wet gel, wherein the associative polymer(s) have a weight average molecular weight of from about 10 kDa to about 2,000 kDa.

The invention provides an associative polymer, a powder, and a process for making a powder comprising, networking one or more associative polymer(s) and one or more optional surfactant(s) to form a wet gel, and forming a powder from the wet gel, wherein the associative polymer(s) have a weight average molecular weight of from about 10 kDa to about 2,000 kDa.

Polymerizable compositions comprising a redox initiator system is disclosed. The redox initiators comprises a photolabile reducing agent, that photolyzes and initiates the redox cycle. Dental compositions comprising dental resins and the photolabile redox initiator system are also described.

Polymerizable compositions comprising a redox initiator system is disclosed. The redox initiators comprises a photolabile reducing agent, that photolyzes and initiates the redox cycle. Dental compositions comprising dental resins and the photolabile redox initiator system are also described.

The present invention relates to tetrahydropyran and thiopyran derivatives having dual pharmacological activity towards both the sigma () receptor, and the -opioid receptor, to processes of preparation of such compounds, to pharmaceutical compositions comprising them, and to their use in therapy, in particular for the treatment of pain.

The present invention relates to tetrahydropyran and thiopyran derivatives having dual pharmacological activity towards both the sigma () receptor, and the -opioid receptor, to processes of preparation of such compounds, to pharmaceutical compositions comprising them, and to their use in therapy, in particular for the treatment of pain.

Provided is a fluorine-containing polymer which has no perfluoroalkyl group of 4 or more carbon atoms and which, when formed together with a photoacid generator into a film, shows water repellency after film formation, but becomes hydrophilic by the action of an acid generated under light irradiation, and thus serves as a pattern forming material capable of forming a film with high sensitivity and resolution. A fluorine-containing polymer according to the present invention has a repeating unit of the formula (1)

##STR00001##

where R.sup.1 is a hydrogen atom, a fluorine atom or a C.sub.1-C.sub.10 alkyl group; R.sup.2 to R.sup.5 are each independently a hydrogen atom or a C.sub.1-C.sub.10 alkyl group; X is a single bond or a divalent group; Y is a C.sub.1-C.sub.3 fluoroalkyl or carboxylate (COOR) group; R is a C.sub.1-C.sub.3 fluoroalkyl group; and seven or less of hydrogen atoms contained in the substituent group may be substituted with fluorine.