Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: The invention is to methods of gene silencing in arthropods using dsRNA. The method is include contacting the arthropod with, and/or directly feeding the arthropod, the dsRNA to the arthropods to deliver the dsRNA to arthropod tissues. It is envisaged that the methods of the invention will have use in determining the biological function of genes in arthropods. Methods of pest control of arthropods, and of protecting arthropods against parasites and predators are provided. Transgenic arthropods expressing dsRNA molecules are also provided by the present invention.

Abstract: This invention relates to a composition for the preservation of a virus, the composition including a virus, a lipid and a cryoprotectant.

Abstract: This invention relates to a composition for the preservation of a virus, the composition including a virus, a lipid and a cryoprotectant.

Abstract: Compounds having highly specific endoribonuclease activity are described. The compounds of this invention, also known as ribozymes, comprise ribonucleotides having two hybridizing regions with predetermined sequences capable of hybridizing with a plant, animal or viral target RNA, a region of defined sequence and a base paired stem region.

Abstract: The present invention provides a method for introducing nucleic acids into cells. The method involves exposing the cells to a compound having formula (1), in which w is a nucleic acid, x is a peptide or amino acid, y is a linker having a chain length equivalent to 1 to 20 carbon atoms or is absent, R.sub.4 is H ir CH.sub.2 O--R.sub.3 ; and R.sub.1, R.sub.2 and R.sub.3 are the same or different and are either hydrogen, methyl, ethyl, hydroxyl or an acyl group derived from a fatty acid having a carbon chain of 3 to 24 carbon atoms saturated or unsaturated, with the proviso that at least one of R.sub.1, R.sub.2 and R.sub.3 is an acyl group derived from a fatty acid, or to a compound having the formula (2): w . . . xyNHCH.sub.2 CH.sub.2 OR.sub.5, in which w is a nucleic acid, x is a peptide or amino acid, y is a linker having a chain length equivalent to 1 to 20 carbon atoms or absent, R.sub.5 is an acyl group derived from a fatty acid having a carbon chain of 3 to 24 carbon atoms saturated or unsaturated.

Abstract: The present invention provides a method for introducing nucleic acids into cells. The method involves exposing the cells to a compound having the formula ##STR1## in which: w is a nucleic acidx is a non-amino acid or non-peptide nucleic acid binding groupy is a spacer having a chain length equivalent to 1-30 carbon-carbon single covalent bonds or is absentR.sub.4 is H or halogen or CH.sub.2 O--R.sub.3 ; and R.sub.1, R.sub.2 and R.sub.3 are the same or different and are either hydrogen, methyl, ethyl, alkyl, alkenyl, hydroxylated alkyl, hydroxylated alkenyl groups or ether containing alkyl, alkenyl, hydroxylated alkyl or hydroxylated alkenyl groups optionally being an acyl group having a carbon chain length equivalent to 3-24 carbon atoms saturated or unsaturated, with the proviso that at least one of R.sub.1, R.sub.2 or R.sub.3 includes a group having a carbon chain of 3-24 carbon atoms saturated or unsaturated, or to a compound having the formula:w . . . y--y--NH--CH.sub.2 --CH.sub.2 O--R.sub.

Abstract: Compounds having highly specific endoribonuclease activity are described. The compounds of this invention, also known as ribozymes, comprise ribonucleotides having two hybridizing regions with predetermined sequences capable of hybridizing with a plant, animal or viral target RNA, a region of defined sequence and a base paired stem region.