MeSH Browser

MeSH Heading: Bacillota
Tree Number(s): B03.353
Unique ID: D000068536
RDF Unique Identifier: http://id.nlm.nih.gov/mesh/D000068536
Scope Note: A phylum of predominantly GRAM-POSITIVE BACTERIA that includes the orders Bacillales and EUBACTERIALES. BACILLOTA and BACTEROIDETES are the two bacterial phyla that constitute the majority of the human gut MICROBIOTA.
Entry Term(s): Clostridial Firmicutes; Firmicuteota; Firmicutes
Registry Numbers: txid1239
Previous Indexing: Gram-Positive Bacteria (2004-2015)
Public MeSH Note: 2026(2016)
History Note: 2026(2016)
Date Introduced: 2016/01/01
Last Updated: 2026/01/01

Allowable Qualifiers: chemistry (CH)

classification (CL)

cytology (CY)

drug effects (DE)

enzymology (EN)

genetics (GE)

growth & development (GD)

immunology (IM)

isolation & purification (IP)

metabolism (ME)

pathogenicity (PY)

physiology (PH)

radiation effects (RE)

ultrastructure (UL)

virology (VI)

Concept UI: M000603052
Registry Numbers: txid1239
Scope Note: A phylum of predominantly GRAM-POSITIVE BACTERIA that includes the orders Bacillales and EUBACTERIALES. BACILLOTA and BACTEROIDETES are the two bacterial phyla that constitute the majority of the human gut MICROBIOTA.
Terms: Bacillota Preferred Term
Term UI T001145813
Date10/16/2024
LexicalTag NON
ThesaurusID NLM (2025); Clostridial Firmicutes
Term UI T001145814
Date10/16/2024
LexicalTag NON
ThesaurusID NLM (2025); Firmicuteota
Term UI T001145815
Date10/16/2024
LexicalTag NON
ThesaurusID NLM (2025); Firmicutes
Term UI T000876184
Date03/04/2015
LexicalTag NON
ThesaurusID NLM (2016)

Bacillota MeSH Descriptor Data 2026