Gram stainyoudaoicibaDictYouDict[Gram stain 词源字典]
"A staining technique for the preliminary identification of bacteria, in which a violet dye is applied, followed by a decolorizing agent and then a red dye. The cell walls of certain bacteria (denoted Gram-positive) retain the first dye and appear violet, while those that lose it (denoted Gram-negative) appear red", Late 19th century: named after Hans C. J. Gram (1853–1938), the Danish physician who devised the method.[Gram stain etymology, Gram stain origin, 英语词源]
agrobacteriumyoudaoicibaDictYouDict
"A bacterium of the genus Agrobacterium, which includes Gram-negative aerobic rods found in soil, several of which cause plant galls; also (in form Agrobacterium) the genus itself", 1940s. From agro- + bacterium, after scientific Latin Agrobacterium, genus name.
HelicobacteryoudaoicibaDictYouDict
"A genus of Gram-negative, microaerophilic bacteria with helical, curved, or straight cells, isolated chiefly from the digestive tract of mammals; (also helicobacter) a bacterium of this genus, especially Helicobacter pylori, which causes chronic gastritis and peptic ulcer disease in humans", 1980s. From scientific Latin Helicobacter, genus name from ancient Greek ἑλικο- + -bacter.
MoraxellayoudaoicibaDictYouDict
"A genus of Gram-negative bacteria (family Neisseriaceae) inhabiting the mucous membranes of mammals and causing infections of the middle ear, respiratory tract, and conjunctiva; specifically a subgenus of this genus comprising rod-shaped bacteria occurring in pairs or chains; (also moraxella) a bacterium of this genus", 1940s. From scientific Latin Moraxella from the name of Victor Morax, Swiss ophthalmologist, who discovered the bacteria + classical Latin -ella).