UMLS Hierarchy Tracer (Ancestors & Descendants)

Enter a Concept ID (CUI) to view its parent and child hierarchies. Select a preferred language for display names; **English will be used as a fallback**.

Displaying names in **English (ENG)** (with English fallback).

Target Concept: Histamine H2 Antagonists (C0019593)

Ancestor Paths (Parents/Root)

Ancestor Path 1 (Root Source: LIMIT)

  1. ... MAX DEPTH REACHED ... CUI: LIMIT / Source: LIMIT
  2. CUI: - / Source: MSH
  3. MeSH Descriptors CUI: C1256739 / Source: MSH
  4. Topical Descriptor CUI: C1256741 / Source: MSH
  5. Chemicals and Drugs (MeSH Category) CUI: C0007995 / Source: MSH
  6. Chemical Actions and Uses CUI: C0600505 / Source: MSH
  7. Pharmacologic Actions CUI: C0600511 / Source: MSH
  8. Molecular Mechanisms of Pharmacological Action CUI: C1258062 / Source: MSH
  9. Neurotransmitter Agents CUI: C0243051 / Source: MSH
  10. Histamine Agents CUI: C0242704 / Source: MSH
  11. Histamine Antagonists CUI: C0019590 / Source: MSH
  12. Histamine H2 Antagonists (START) CUI: C0019593 / Source: MSH

Ancestor Path 2 (Root Source: LIMIT)

  1. ... MAX DEPTH REACHED ... CUI: LIMIT / Source: LIMIT
  2. CUI: - / Source: MSH
  3. MeSH Descriptors CUI: C1256739 / Source: MSH
  4. Topical Descriptor CUI: C1256741 / Source: MSH
  5. Chemicals and Drugs (MeSH Category) CUI: C0007995 / Source: MSH
  6. Chemical Actions and Uses CUI: C0600505 / Source: MSH
  7. Pharmacologic Actions CUI: C0600511 / Source: MSH
  8. Physiological Effects of Drugs CUI: C1258063 / Source: MSH
  9. Neurotransmitter Agents CUI: C0243051 / Source: MSH
  10. Histamine Agents CUI: C0242704 / Source: MSH
  11. Histamine Antagonists CUI: C0019590 / Source: MSH
  12. Histamine H2 Antagonists (START) CUI: C0019593 / Source: MSH

Descendant Paths (Children/Leaves)

This concept appears to be a Leaf node in the available hierarchies (showing only the starting concept).

Descendant Path 1 (Top Source: MSH)

  1. Histamine H2 Antagonists (START) CUI: C0019593 / Source: MSH

Unique Ancestor Paths Found: 2 | Unique Descendant Paths Found: 1 | Max Depth: 10 levels.