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Haemagglutinating activity of R2 B vaccine strain of Newcastle disease virus in inoculated eggs

Haemagglutinating activity of R2 B vaccine strain of Newcastle disease virus in inoculated eggs

Virus Information Exchange Newsletter for South East Asia and the Western Pacific 6(1): 32

Screening batches of eggs inoculated with R2B vaccine strain showed haemagglutination titres higher in the chorio-allantoic membrane than the amino-allantoic fluid at 48 h post-inoculation, but higher in the amnioallantoic fluid at 60 h. Eggs harvested at or before embryo death yielded more virus in the amnio-allantoic fluid.

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