Maedi visna infection in a flock in Yorkshire.
Buchanan
H F
HF
D000818:Animals; D004739:England / Q000453:epidemiology; D005260:Female; D011021:Pneumonia, Progressive Interstitial, of Sheep / Q000175:diagnosis / Q000453:epidemiology*; D012756:Sheep; D014790:Visna-maedi virus / Q000302:isolation & purification*