The invention relates to a method and compositions for modifying a phenotype of a virus, such as viral tropism and host range, by iterative sequence recombination of variant viruses and selection of improved variants.

L'invention concerne une méthode et des compositions pour modifier un phénotype d'un virus, tel que la gamme virale de tropism et de centre serveur, par la recombinaison itérative d'ordre des virus variables et le choix des variantes améliorées.
 
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> PROCESS FOR THE DETERMINATION OF PEPTIDES CORRESPONDING TO IMMUNOLOGICALLY IMPORTANT EPITOPES AND THEIR USE IN A PROCESS FOR DETERMINATION OF ANTIBODIES OR BIOTINYLATED PEPTIDES CORRESPONDING TO IMMUNOLOGICALLY IMPORTANT EPITOPES, A PROCESS FOR PREPARING THEM AND COMPOSITIONS CONTAINING THEM

> Oligonucleotide primers for efficient detection of hepatitis C virus (HCV) and methods of use thereof
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