id author title date pages extension mime words sentences flesch summary cache txt cord-271568-qgpi2kcs Jackwood, M.W. Avian coronavirus infectious bronchitis virus susceptibility to botanical oleoresins and essential oils in vitro and in vivo 2010-01-21 .txt text/plain 7596 351 57 Genomic diversity and the Abbreviations: CPE, cytopathic effects; EID50, 50% embryo infectious dose; ELISA, enzyme linked immunosorbent assay; HMA, hexamethylene amiloride; IBV, infectious bronchitis virus; MHV, mouse hepatitis virus; PBS, phosphate buffered saline; RFLP, restriction fragment length polymorphism; RT-PCR, reverse transcriptasepolymerase chain reaction; SARS-CoV, Severe Acute Respiratory Syndrome virus; SPF, specific pathogen free; TCID50, 50% tissue culture infectious dose. Clinical signs were observed in all of the Mass41 virus challenged groups of birds regardless of treatment but in the intranasal and spray treated groups, fewer birds had signs and the signs were milder, as reflected by lower average scores (Table 1) . Virus was detected in 1 of 5 vaccinated birds in the treated group at 7 days post-vaccination Table 3 Experiment 4: clinical signs a in broiler chickens challenged with IBV at various times after treatment with QR448(a) at 1 day of age. ./cache/cord-271568-qgpi2kcs.txt ./txt/cord-271568-qgpi2kcs.txt