Ontology

PCL

Provisional Cell Ontology

Holds data-driven cell types (e.g. from single-cell transcriptomics of the brain) before they are ready for the Cell Ontology, linked to their source taxonomies.

cell typestranscriptomicsOBO Foundry
C65

FAIR 44/48

Version 2025-07-07

Evaluated 25 Oct 2026

How scores work

Source & access

Homepagegithub.com DownloadCanonical file / PURL Browse in OLSEMBL-EBI Ontology Lookup ServiceBrowse in OBO FoundryOBO Foundry registry

Portals & registries

SourceIDVersionClassesPropertiesIndividualsLoaded
OLS (EMBL-EBI)pcl2025-07-0737,2105769,21325 Oct 2026
OBO Dashboardpcl2025-07-0727,777——11 Dec 2025

Ontology IRI http://purl.obolibrary.org/obo/pcl.owl
Version IRI http://purl.obolibrary.org/obo/pcl/releases/2025-07-07/pcl.owl

Languages en

Imports from (20)
BFO BSPO ChEBI CL COB GO IAO MOD NBO NCBITAXON OBI OMO PATO PR RO SCHEMAORG_HTTP SEMAPV SO STATO UBERON

Reused by (3)
CL HRA PHIPO

Logical consistency
consistent · 0 unsatisfiable
OWL 2 DL
yes
ROBOT report
1,138 errors · 14,875 warnings · 1 info
OBO principles
FP01FP02FP03FP04FP05FP06FP07FP08FP09FP11FP12FP16FP20
Axioms
486,086 · 37.81% entities reused

Also registered as
aberowl: PCL bioportal: PCL fairsharing: FAIRsharing.bfcfd0 obofoundry: pcl ols: pcl ontobee: PCL wikidata.entity: Q113014435

Automated evaluation

F Findable FAIR9/12
  • Persistent identifier (F1)purl.obolibrary.org+4
  • Indexed in services (F4)5: OLS, BioPortal, OBO Foundry, Bioregistry, FAIRsharing+5
  • Citable reference (F2)no reference publication listed0
A Accessible FAIR12/12
  • Homepage reachableHTTP 200+3
  • Artefact retrievable over HTTP(S) (A1)download HTTP 200+6
  • Metadata persists in a registry (A2)OBO Foundry, Bioregistry+3
I Interoperable FAIR12/12
  • Formal machine-readable format (I1)OWL, OBO+5
  • Semantic-web IRIs (I2)OWL, OBO+3
  • References other vocabularies (I3)imports 20: bfo, bspo, chebi, cl, cob, go, iao, mod…+4
R Reusable FAIR11/12
  • Clear license (R1.1)CC BY 4.0+5
  • Release provenance (R1.2)2025-07-07 (version IRI in the artefact)+4
  • Community standards (R1.3)OBO principles: 8/13 checks pass+2
Q Ontology consistency & quality15/20
  • Upper-ontology alignmentimports BFO, COB+4
  • Standard relations (RO)imports RO+2
  • Logical consistencyconsistent, 0 unsatisfiable classes (OBO Dashboard)+6
  • ROBOT report: no errors1138 errors0
  • ROBOT report: warning density14875 warnings / 27777 classes = 0.540
  • Scaled 12/16 → 20OOPS! pitfall scan unavailable for this run+3
M Maintenance2/16
  • Recency2025-07-08 → 15.6 months (≤ 2 years)+2
  • Release cadence (12 months)0 releases (GitHub releases)0
U Community adoption5/16
  • Documented adopting projects1 project+2
  • Reused by other ontologies3: cl, hra, phipo+2
  • Community signalmax(stars 12 → 1, citations 0 → 0)+1
P Penalties (inactivity & inconsistency)-1
  • Time since last activity1.3 years → 4 × max(0, 1.3 − 1)-1
  • Inactive statusnot archived, legacy or inactive0

FAIR subtotal 44/48 · earned 66/100 − 1 inactivity = 65/100 → grade C

Community adoption 1

  • BICAN

    Transcriptomic brain cell types

    Curated by NeuroSchema

Know a project that uses PCL? Suggest it.

History & changes 6 runs

25 Oct 2026: 7125 Oct 2026: 7325 Oct 2026: 7225 Oct 2026: 6525 Oct 2026: 6525 Oct 2026: 56Score over time
  • Score: 65 → 56 · rubric v3.0 → v3.3
  • Score: 72 → 65 (grade B → C) · rubric v2.2 → v3.0
  • Score: 73 → 72 · rubric v2.0 → v2.2
  • Score: 71 → 73 · rubric v1.0 → v2.0
RunScoreFAIRVersion evaluatedTermsSnapshot
25 Oct 2026, 19:23 UTC56 C442025-07-0737,210JSON
25 Oct 2026, 19:10 UTC65 C442025-07-0737,210JSON
25 Oct 2026, 18:49 UTC65 C442025-07-0737,210JSON
25 Oct 2026, 18:21 UTC72 B552025-07-0737,210JSON
25 Oct 2026, 18:08 UTC73 B552025-07-0737,210JSON
25 Oct 2026, 17:55 UTC71 B—2025-07-0737,210JSON

Provenance

Every fact on this page was fetched automatically. Each row shows where it came from and when. If a source fails, the last good value is kept and marked “carried forward”.

FactSourceRetrieved
Homepage link check (HTTP 200)github.com25 Oct 2026, 19:10 UTC
Repository link check (HTTP 200)github.com25 Oct 2026, 19:10 UTC
Download link check (HTTP 200)purl.obolibrary.org25 Oct 2026, 19:10 UTC
Artefact header (version IRI)release-assets.githubusercontent.com25 Oct 2026, 19:10 UTC
Git refs (commit 7b166cb, latest tag v2025-07-08)github.com25 Oct 2026, 19:10 UTC
GitHub repository statisticsapi.github.com25 Oct 2026, 19:10 UTC
OLS classes, imports, version & releaseebi.ac.uk25 Oct 2026, 19:10 UTC
OBO Foundry status, license & usagesobofoundry.org25 Oct 2026, 19:10 UTC
Bioregistry mappings, dependencies & reusebioregistry.io25 Oct 2026, 19:10 UTC
OBO Dashboard (checked 11 Dec 2025)dashboard.obofoundry.org25 Oct 2026, 19:10 UTC

Run 2026-10-25T19-10-16Z · evaluator v2.0.0 · rubric v3.0 · entry.json · run snapshot