Bacillota

Phylum of bacteria

The Bacillota (synonym "Firmicutes") are a phylum of bacteria, most of which have Gram-positive cell wall structure. They have round cells, called cocci (singular coccus), or rod-like forms (bacillus). A few Bacillota, such as Megasphaera, Pectinatus, Selenomonas, and Zymophilus from the class Negativicutes, have a porous pseudo-outer membrane that causes them to stain Gram-negative.

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