How Long Do Things in Your Fridge Stay Good AFTER Their Expiration Dates? You know that awful feeling you get when you throw away bacon, just because somebody named Oscar printed numbers on the package saying it was expired? No? You've never thrown away bacon, under any circumstances? Good man.
Spirillum volutans with polar amphitrichous flagella. Spirillum volutans is a gram-negative, flagellated spirochete. The bacterium is found in freshwater. Volutin granules of polyphosphate can be seen. Brightfield. Magnification: 250x.
Description and Significance. Spirillum bacteria are thought to have been first described by van Leeuwenhoek in the 1670s and later by Muller. S. volutans is a large bacterium as well as an obligate microaerophile with a helical structure.ell Structure and Metabolism. Spirillum bacteria are large chemotrophic spirilla 1.4 to 1.7 micrometers in diameter and up to 60 micrometers in length, with anywhere from less than one to five helical turns.