In the present study, the polymerase chain reaction was used for development of a specific
RT-PCR for avian influenza virus, which may be used for diagnostic purposes. A sets of primers
were selected from strongly conserved regions of the genome coding for the nucleoprotein (NP)
gene and were tested on 26 avian influenza viruses belonging to 14 H subtypes. RNA extracted
directly from clinical trachea or cloaca swab and infected tiss...