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CompoundsSubstances with curated findings
OutcomesMeasured endpoints
ProteinsTransporters and enzymes
InteractionsPairs that share biology
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Chemistry

ReactionsRhea and Human-GEM, by subsystem
ReachWhat a compound can become

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PathwaysReactions grouped under one name
ProcessesWhat proteins are annotated as doing
AnatomyTissues, by what is expressed there
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DiseasesFeatures, genes, and where each sits

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Reference

Evidence

Compounds
Outcomes
Proteins
Interactions
Papers
Articles

Chemistry

Reactions
Reach

Reference layer

Pathways
Processes
Anatomy
Cell types
Organisms
Materials
Assessments
Diseases

Atlas Graph Twin Access

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Catalyst

Computational infrastructure for human biology, built on a provenance-aware knowledge graph. Findings retain their sources; research and simulation are the next layers.

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A reference for what the literature reports. Not medical advice.

© 2026 CatalystPrivacy TermsReference data under the licences listed on the attribution page.

hemarthrosis

MONDO:0004431Mondo

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Findings

No curated finding names hemarthrosis yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.

Definition

Bleeding into the joints. It may arise from trauma or spontaneously in patients with hemophilia.

Definition from the Mondo Disease Ontology (MONDO:0004431), read 2026-09-29. CC BY 4.0.

Where it sits

A kind of: arthropathy