Firmicutes
The Firmicutes (Latin: "firmus", strong, and "cutis", skin, referring to the cell wall) are a phylum of bacteria, most of which have gram-positive cell wall structure. A few, however, such as "Megasphaera", "Pectinatus", "Selenomonas" and "Zymophilus", have a porous pseudo-outer membrane that causes them to stain gram-negative. Scientists once classified the Firmicutes to include all gram-positive bacteria, but have recently defined them to be of a core group of related forms called the low-G+C group, in contrast to the Actinobacteria. They have round cells, called cocci (singular coccus), or rod-like forms (bacillus).
Q149075
Firmicutes
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Q397
Latin
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Q38348
phylum
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Q10876
bacteria
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Q857288
gram-positive
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Q128700
cell wall
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Q3853942
Megasphaera
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Q3898554
Pectinatus
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Q3954750
Selenomonas
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Q4025063
Zymophilus
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Q632006
gram-negative
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Q149075
Firmicutes
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Q933491
G+C
UNK
Q130914
Actinobacteria
Concept
Q857288
gram-positive
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Q10876
bacteria
Concept