Comparison of a beta-propiolactone inactivated four-strain with three single-strain Newcastle disease vaccines.
D000818:Animals; D002645:Chickens; D007783:Lactones; D009521:Newcastle Disease / Q000517:prevention & control*; D011422:Propionates; D014765:Viral Vaccines; D014774:Virulence
D007783:Lactones; D011422:Propionates; D014765:Viral Vaccines