obtained are two types of hyperimmune sera against the virus of the mucous disease -- viral diarrhea ( md -- vd ) by means of subcutaneous and venous hyperimmunization of cattle with a live viral suspension : ( a ) a polyvariant hyperimmune serum , obtained by the use of four local and reference strains of the md -- vd virus with a neutralization titre against the nadl strain of 1 : 1280 .
C0152517
viral diarrhea
C0042769
md -- vd