Cefaclor is used for treatment of infections caused by susceptible organisms including H influenzae and for treatment of otitis media, sinusitis, and infections involving the respiratory tract. It may not be appropriate in acute sinusitis, owing to less activity and the potential for severe allergic reactions.
nitrogen-fixing bacteria noun [pl]. âº biology âbacteria that can âabsorb nitrogen from the âair and âchange it into a âform that âplants can use for âfood. (Definition of nitrogen-fixing bacteria from the Cambridge Academic Content Dictionary Â© Cambridge University Press). See all translations.
The bacteria fix nitrogen by converting it to ammonia and nitrates which the plant can absorb and use to build its nitrogen containing molecules such as amino and nucleic acids. In return it offers some of its own sugars to the bacteria to cover their needs. It's a trade off between biologically usable nitrogen and sugar.