This article needs to be updated. The reason given is: no files for 2006 are listed at the cited source, but files for 2013 are there; NLM releases this information annually. Please help update this article to reflect recent events or newly available information. (February 2020)

The following is a partial list of the "B" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM).

This list continues the information at List of MeSH codes (B02). Codes following these are found at List of MeSH codes (B04). For other MeSH codes, see List of MeSH codes.

The source for this content is the set of 2006 MeSH Trees from the NLM.

MeSH B03 – bacteria

MeSH B03.110 – atypical bacterial forms

MeSH B03.110.422 – l forms

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MeSH B03.110.761 – spheroplasts

MeSH B03.120 – bacteria, aerobic

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MeSH B03.130 – bacteria, anaerobic

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MeSH B03.140 – Bacteroidetes

MeSH B03.140.094 – bacteroidaceae

MeSH B03.140.190 – flavobacteriaceae

MeSH B03.140.200 – flexibacteraceae

MeSH B03.140.750 – Rhodothermus

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MeSH B03.140.800 – Sphingobacterium

MeSH B03.150 – biofilms

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MeSH B03.165 – blood-borne pathogens

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MeSH B03.250 – Chlorobiota

MeSH B03.250.140 – Chlorobium

MeSH B03.275 – Chloroflexota

MeSH B03.275.150 – Chloroflexus

MeSH B03.280 – "Cyanobacteria"

MeSH B03.280.100 – Anabaena

MeSH B03.280.110 – Aphanizomenon

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MeSH B03.280.200 – Cyanothece

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MeSH B03.280.210 – Cylindrospermopsis

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MeSH B03.280.500 – Microcystis

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MeSH B03.280.550 – Nodularia

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MeSH B03.280.575 – Nostoc

MeSH B03.280.650 – Plectonema

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MeSH B03.280.745 – Synechococcus

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MeSH B03.280.750 – Synechocystis

MeSH B03.300 – endospore-forming bacteria

MeSH B03.300.390 – gram-positive endospore-forming bacteria

MeSH B03.370 – Fusobacteriota

MeSH B03.370.250 – Fusobacterium

MeSH B03.370.437 – Leptotrichia

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MeSH B03.370.600 – Propionigenium

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MeSH B03.370.700 – Streptobacillus

MeSH B03.440 – gram-negative bacteria

MeSH B03.440.040 – anaplasmataceae

MeSH B03.440.050 – Arcobacter

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MeSH B03.440.090 – bartonellaceae

MeSH B03.440.100 – Buchnera

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MeSH B03.440.180 – Campylobacter

MeSH B03.440.190 – chlamydiales

MeSH B03.440.210 – Chloroflexus

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MeSH B03.440.375 – Gastrospirillum

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MeSH B03.440.400 – gram-negative aerobic bacteria

MeSH B03.440.425 – gram-negative anaerobic bacteria

MeSH B03.440.450 – gram-negative facultatively anaerobic rods

MeSH B03.440.475 – gram-negative oxygenic photosynthetic bacteria

MeSH B03.440.500 – Helicobacter

MeSH B03.440.520 – Lawsonia bacteria

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MeSH B03.440.540 – Methylosinus

MeSH B03.440.560 – mollicutes

MeSH B03.440.595 – oceanospirillaceae

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MeSH B03.440.602 – Ornithobacterium

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MeSH B03.440.612 – piscirickettsiaceae

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MeSH B03.440.623 – Rhodobacter

MeSH B03.440.645 – Rhodomicrobium

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MeSH B03.440.646 – Rhodovulum

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MeSH B03.440.647 – rickettsiaceae

MeSH B03.440.680 – Roseobacter

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MeSH B03.440.840 – spirillaceae

MeSH B03.510 – gram-positive bacteria

MeSH B03.510.024 – Actinomycetota

MeSH B03.510.400 – gram-positive cocci

MeSH B03.510.415 – gram-positive endospore-forming bacteria

MeSH B03.510.460 – gram-positive rods

MeSH B03.660 – Pseudomonadota

MeSH B03.660.050 – Alphaproteobacteria

MeSH B03.660.075 – Betaproteobacteria

MeSH B03.660.125 – Deltaproteobacteria

NOTE: The class Deltaproteobacteria has been dismantled and its members have been assigned to new phyla (indicated in parentheses).

MeSH B03.660.150 – Campylobacterota

MeSH B03.660.250 – gammaproteobacteria

MeSH B03.851 – spirochaetales

MeSH B03.851.475 – leptospiraceae

MeSH B03.851.595 – spirochaetaceae

MeSH B03.867 – spores

MeSH B03.867.680 – spores, bacterial

MeSH B03.900 – sulfur-reducing bacteria

MeSH B03.900.174 – Desulfitobacterium

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MeSH B03.900.300 – Desulfotomaculum

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MeSH B03.900.350 – Desulfovibrio

MeSH B03.900.370 – Desulfuromonas

The list continues at List of MeSH codes (B04).

Category