[The Moroccan strain of Valée A aphthous virus; a possible weakened strain].
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D005536:Foot-and-Mouth Disease / Q000453:epidemiology*; D014780:Viruses
CATTLE/diseases; FOOT AND MOUTH DISEASE/epidemiology; VIRUSES
La souche marocaine de virus aphteux A Vallée serait-elle une souche attenuée?