Figure 1From: Experimental induction of proventricular dilatation disease in cockatiels (Nymphicus hollandicus) inoculated with brain homogenates containing avian bornavirus 4Body weights of the ABV4-inoculated and sham-inoculated cockatiels during the study period. The ABV4-inoculated birds (cockatiels 1–3), are shown in bald lines with solid symbols. Cockatiels 4,5 are the control birds; "*" marks the first observation of undigested seeds in the feces; "#" marks the first detection of ABV4 RNA in a choanal or cloacal swab by RT-PCR. Note the continuous decrease in BW of cockatiels 1 and 3 starting on day 21 PI and 31 PI, respectively.Back to article page