rabies vaccine, Flury strain egg-passage

ra·bies vac·cine, Flu·ry strain egg-·pas·sage

1. high-egg-passage (HEP) vaccine: living Flury strain rabies virus at the 180th-190th level egg passage (embryonate eggs), used for vaccination of cattle and cats;
2. low-egg-passage (LEP) vaccine: at the 40th-50th passage level, containing 103-104 mouse LD50; nonpathogenic in dogs but retains some pathogenicity for cattle and cats.