vi'rus

[L. poison.] i. Contagium, the specific poison of an infectious disease. 2. Vaccine lymph, atten'uated v., a virus, or pathogenic microorganism, so modified by heat, cultivation under tmfavorable conditions, etc., as to be incapable of producing the specific disease, yet exciting to the production of protective antibodies, fixed v., V. of rabies of the utmost po ible virulence, obtained by niunerous pa ages through rabbits •.seev.of the streets, hu'manized v., humanized vaccine.* or'ganized v., a pathogenic microorganism, imorg'anized v., a toxin or other chemical poison produced through the action of microorganisms or the body cells. V. of the streets, the of rabies present nat i i rally in rabid dogs, le potent than fixed v. v. vaccin'icum (U.S.), vaccine virus; vaccine pulp removed from healthy vaccinated heifers, rubbed up in a mortar, strained, and made into a smooth emulsion with glycerin; the U.S. P. provides that only such virus shall be used as complies with the requirements of the law and the regtdations established by the U. S. Public Health Service.