gram-negative gram-negative


  • (adj) (of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method


  1. Such infection with toxic, "gram-negative" bacteria kills up to 100,000 Americans a year, many of them surgical patients and trauma victims.
  2. The protective value of both "gram-positive" and "gram-negative" destroyers has yet to be tried on human beings.
  3. Streptomycin, an antibiotic containing a germ-killing soil organism called Actinomyces griseus, is especially effective against certain deadly "gram-negative" infections for .


  • The End of Antibiotics?

    Maryn McKenna has an unsettling and sobering article at Nature examining the the emergence of carbapenem-resistant Enterobacteriaceae. Since 2002, this large family of bacteria, gram-negative organisms that include many symbionts as well as the gut-dwelling Escherica coli and Klebsiella species that cause hospital infections, are increasingly in possession of a carbapenem-resistance gene rending ...
    on August 2, 2013     Source: Discover

Word of the Day
untenable untenable
/ən ˈtɛ nə bəl /