Abstract: The use of a circular vector DNA to produce a pharmaceutical agent for the treatment of mammals or humans by gene therapy wherein the vector DNA contains a selection marker gene and a DNA sequence that is heterologous for the vector which causes a modulation, correction or activation of the expression of an endogenous gene or the expression of a gene introduced into the cells of the mammal or the human by the vector DNA which is characterized in that the vector nucleic acid a) is amplified under selection pressure and cleaved in such a way that the said selection marker gene and the said heterologous DNA are present on separate DNA fragments, b) the DNA fragment which contains the heterologous DNA or both fragments are recircularized to form vectors, c) the DNA fragments are separated before or after the recircularization d) the recircularized DNA fragment which contains the heterologous DNA is isolated and e) the recircularized DNA fragment obtained in this manner is used to produce the pharmaceutical a

Abstract: The use of a circular vector DNA to produce a pharmaceutical agent for the treatment of mammals or humans by gene therapy wherein the vector DNA contains a selection marker gene and a DNA sequence that is heterologous for the vector which causes a modulation, correction or activation of the expression of an endogenous gene or the expression of a gene introduced into the cells of the mammal or the human by the vector DNA which is characterized in that the vector nucleic acid a) is amplified under selection pressure and cleaved in such a way that the selection marker gene and the heterologous DNA are present on separate DNA fragments, b) the DNA fragment which contains the heterologous DNA or both fragments are recircularized to form vectors, c) the DNA fragments are separated before or after the recircularization d) the recircularized DNA fragment which contains the heterologous DNA is isolated and e) the recircularized DNA fragment obtained in this manner is used to produce the pharmaceutical agent.

Abstract: Method for the specific detection of nucleic acids in a sample by reaction of the sample with one or several labelled nucleotide triphosphates and one or several enzymes which catalyse the production of a labelled nucleic acid B which contains this nucleotide, non-thermally denaturation, reacting the sample with a nucleic acid probe C which is sufficiently complementary to nucleic acid B and which contains at least one immobilizable group, if desired, contacting the nucleic acid hybrid D formed with a solid phase which recognizes and binds the immobilizable group, removing the liquid from the solid phase and determining the label on the solid phase as a measure for the presence of the nucleic acid.