Gram-positive ((of bacteria) being or relating to a bacterium that retains the violet stain used in Gram's method). Gram-negative ((of bacteria) being of or relating to a bacterium that does not retain the violet stain used in Gram's method). Hyponyms (each of the following is a kind of bacteria):
Outdoors experts: Keep ticks off by spraying repellent on your clothes. A female deer tick. Shane Wilkinson, camping equipment manager at Bass Pro Shops in the Fingerlakes Mall, said he was among those who mistakenly thought this past winter was going to put a real hurt on the ticks.
Some ticks produce a sticky fluid that helps them stay attached to the host while they feed, while others have small hooks that they use to hold themselves in place. Because ticks gorge themselves so slowly, they may stay in place for a period as short as a few hours or as long as three weeks or so. During this period they drink a host's blood, and may also secrete their own saliva into the host's bloodstream.