Synthesis in vitro of RNA complementary to parental viral RNA by RNA polymerase induced by influenza virus.

Adenosine Triphosphate/metabolism Culture Techniques Cytosine Nucleotides/metabolism Enzyme Induction Fibroblasts/metabolism Guanine Nucleotides/metabolism Hot Temperature Nucleic Acid Denaturation Nucleosides/analysis Orthomyxoviridae Phosphorus Isotopes RNA/analysis RNA Nucleotidyltransferases/biosynthesis,metabolism RNA, Viral/biosynthesis Time Factors Tritium

Cytosine Nucleotides Guanine Nucleotides Nucleosides Phosphorus Isotopes RNA, Viral Tritium RNA Adenosine Triphosphate RNA Nucleotidyltransferases