Proventricular dilatation disease (PDD) caused by parrot bornavirus (PaBV) infection is an often-fatal disease known to infect Psittaciformes. The impact of age at the time of PaBV infection on organ lesions and tissue distribution of virus antigen and RNA remains largely unclear. For this purpose. tissue sections of 11 cockatiels intravenously infected with PaBV-4 as adults or juveni... https://midwaysportes.shop/product-category/batting-helmet/