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Descriptor in English: Nematoda
Descriptor in Spanish: Nematodos
Descriptor in Portuguese: Nematoides
Descriptor in French: Nematoda
Entry term(s): Phasmidia
Secernentea
Sipunculida
Tree number(s): B01.050.500.500.294
Scope note: A phylum of unsegmented helminths with fundamental bilateral symmetry and secondary triradiate symmetry of the oral and esophageal structures. Many species are parasites.
Annotation: general or unspecified; prefer specifics; infection = NEMATODE INFECTIONS; coordinate with specific precoordinated helminth terms (ANTIGENS, HELMINTH, etc) if pertinent
Allowable Qualifiers: AH anatomy & histology
CH chemistry
CL classification
CY cytology
DE drug effects
EM embryology
EN enzymology
GD growth & development
GE genetics
IM immunology
IP isolation & purification
ME metabolism
MI microbiology
PH physiology
PS parasitology
PY pathogenicity
RE radiation effects
UL ultrastructure
VI virology
Online Note: use NEMATODA to search SIPUNCULIDA 1980-84
History Note: SIPUNCULIDA was heading 1980-84
See also the descriptors: Antinematodal Agents MeSH
DeCS UI: 9541
Descriptor UI: D009348
Date Established: 1960/01/01
Date of Entry: 1999/01/01
Revision Date: 2017/05/03
Nematoda - Preferred
Concept UI M0014558
Scope note A phylum of unsegmented helminths with fundamental bilateral symmetry and secondary triradiate symmetry of the oral and esophageal structures. Many species are parasites.
Preferred term Nematoda
Entry term(s) Phasmidia
Secernentea
Sipunculida - Narrower
Concept UI M0014559
Preferred term Sipunculida



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