Nitrogen Metabolism of Bacteria 



21 





Staph tjlococc us 

 aureus 



7 8 9 10 u il 13 



AOS OF OULTUKB IH DAYS 



iS 16 ti la 



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Spirillum metchnlKovU 



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AOt Of CULTURI IK DAY3 

 Chart 4. The formation by bacteria of amino-acid and ammonia from peptone. 



