A1V4I1A1N1I1Z10E1
20 points
AVIANIZE is validvalid
to make less severe by repeated culture in a chick embryo, as a virus [v AVIANIZED, AVIANIZES, AVIANIZING]
to make e.g. a virus less severe by repeated culture in a chicken embryo stock, also AVIANISE [v AVIANIZED, AVIANIZING, AVIANIZES]