Abstract: The present application discloses a DNA molecule comprising a modified Group II intron which does not express the intron-encoded reverse transcriptase but which contains a modified selectable marker gene in the reverse orientation, wherein the marker gene comprises a Group I intron in forward orientation of causing expression in a bacteria cell of the class Clostridia and wherein the DNA molecule comprises sequences that allow for the insertion of the RNA transcript of the Group II intron in the chromosome of a bacterial cell of the class Clostridia. A method of introducing a nucleic acid molecule into a site of a DNA molecule in a bacterial cell of the class Clostridia is also provided. The DNA molecule and the method are useful for making mutations Clostridium spp.

Abstract: There is provided the use as reducing agents of alpha-hydroxycarbonyl compounds capable of forming cyclic dimers. There is also provided corresponding methods of reducing reducible compounds, particularly reduction-activated prodrugs. Examples of the alpha-hydroxycarbonyl compounds used are dihydroxyacetone, glycolaldehyde, glyceraldehyde, erythrose, xylulose, erythrulose or 3-hydroxy-2-butanone.

Abstract: There is provided the use as reducing agents of alpha-hydroxycarbonyl compounds capable of forming cyclic dimers. There is also provided corresponding methods of reducing reducible compounds, particularly reduction-activated prodrugs. Examples of the alpha-hydroxycarbonyl compounds used are dihydroxyacetone, glycolaldehyde, glyceraldehyde, erythrose, xylulose, erythrulose or 3-hydroxy-2-butanone.

Abstract: There is provided the use as reducing agents of alpha-hydroxycarbonyl compounds capable of forming cyclic dimers. There is also provided corresponding methods of reducing reducible compounds, particularly reduction-activated prodrugs. Examples of the alpha-hydroxycarbonyl compounds used are dihydroxyacetone, glycolaldehyde, glyceraldehyde, erythrose, xylulose, erythrulose or 3-hydroxy-2-butanone.

Abstract: Use of an orally or nasally available formulation of Tretazicar for poisoning vermin. An orally available or nasally available formulation of Tretazicar, wherein in the orally available formulation the Tretazicar is protected from acid hydrolysis, and provided that the formulation is not solid Tretazicar in a gelatin capsule. A formulation of Tretazicar in which the Tretazicar is protected from acid hydrolysis, wherein the formulation is present in a liquid form. A combination of Tretazicar and bait. A method of poisoning vermin comprising making available to the vermin an orally or nasally available formulation of Tretazicar and allowing the vermin to ingest or inhale the formulation of Tretazicar.