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.
Each nucleotide includes one nitrogenous base, attached to the 1â carbon of the sugar. A nitrogenous base is an organic molecule containing both carbon and nitrogen atoms. The name nitrogenous base signifies that several nitrogen atoms act as bases in solution. In nucleic acids, nitrogenous bases contain either one ring or two fused rings.