21. It is a fastidious, facultative intracellular bacterium which requires cysteine for growth. 22. When anaerobic and facultative cocci were recovered most of the infection were polymicrobial. 23. Strain CKB is a Gram negative, facultative anaerobe belonging to the Betaproteobacteria. 24. It is a facultative anaerobe capable of aerobic respiration. 25. It is a aryl-halorespiring facultative anaerobic myxobacterium. 26. This motile bacillus is a gram negative, facultative anaerobe and a spirochaete. 27. We have three main priorities : life, facultative and specialty lines like aviation. 28. The obligate and facultative ant symbioses and the effect of mutualisms on biotic communities. 29. Allport first points to the decline in " facultative " treatment of mental functions. 30. And facultative anaerobes can grow without oxygen but use oxygen if it is present.
