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.
Heterocysts are specialized nitrogen-fixing cells formed during nitrogen starvation by some filamentous cyanobacteria, such as Nostoc punctiforme, Cylindrospermum stagnale, and Anabaena sphaerica.