A phylum of unsegmented helminths with fundamental bilateral symmetry and secondary triradiate symmetry of the oral and esophageal structures. Many species are parasites.
Synonyms: Phasmidia, txid6231, Secernentea, Nematoda, Sipunculida
Instance information
comment
use NEMATODA to search SIPUNCULIDA 1980-84 ,SIPUNCULIDA was heading 1980-84 ,general or unspecified; prefer specifics; infection = NEMATODE INFECTIONS; coordinate with specific precoordinated helminth terms (ANTIGENS, HELMINTH, etc) if pertinent
identifier
D009348
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