Rocky Mountain spotted fever vaccine
A vaccine containing a suspension of inactivated Rickettsia rickettsii prepared by growing the microorganisms in the yolk sac of fowl eggs, used to immunize against Rocky Mountain spotted fever.
Why Does A Cow Become Beef?Have you ever stopped to wonder why we eat pork and beef, but not pig or cow? Menus don’t advertise sheep or deer, but mutton and venison. And, we nonchalantly nosh on veal without the linguistic reminder that we’re actually eating meat from a baby calf. When it comes to designating meat terminology, the English language has a few ways of distinguishing between the live …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.