| detection and sequence analysis of avian polyomavirus and psittacine beak and feather disease virus from psittacine birds in taiwan. | avian polyomavirus (apv) and psittacine beak and feather disease virus (pbfdv) are the most common viral diseases of psittacine birds. in taiwan, however, the existence of these viruses in psittacine birds has not been established. polymerase chain reaction (pcr) methodology was therefore employed to ascertain whether apv and pbfdv genomes were present in isolates from psittacine birds of taiwan. a total of 165 psittacine birds belonging to 22 genera were examined between 2002 and 2005. findings ... | 2006 | 17039833 |