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Descriptor in English: Parasites
Descriptor in Spanish: Parásitos
Descriptor in Portuguese: Parasitos
Descriptor in French: Parasites
Entry term(s): Parasite
Tree number(s): B01.050.500.714
Scope note: Invertebrate organisms that live on or in another organism (the host), and benefit at the expense of the other. Traditionally excluded from definition of parasites are pathogenic BACTERIA; FUNGI; VIRUSES; and PLANTS; though they may live parasitically.
Annotation: general or unspecified only: prefer specifics; in lower animals: Manual 22.20; relation to parasitic diseases: Manual 22.12-.20; parasites in food or parasitic contamination of food is indexed under FOOD PARASITOLOGY (IM) + specific parasite (IM) + specific food item /parasitol (IM) or (NIM)
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: search PARASITICIDES under ANTIPROTOZOAL AGENTS 1966
History Note: PARASITICIDES was heading 1963-66
See also the descriptors: Anthelmintics MeSH
Anti-Infective Agents MeSH
Antiprotozoal Agents MeSH
Food Parasitology MeSH
Host-Parasite Interactions MeSH
Parasite Load MeSH
DeCS UI: 10460
Descriptor UI: D010271
Date Established: 1960/01/01
Date of Entry: 1999/01/01
Revision Date: 2011/06/24
Parasites - Preferred
Concept UI M0015918
Scope note Invertebrate organisms that live on or in another organism (the host), and benefit at the expense of the other. Traditionally excluded from definition of parasites are pathogenic BACTERIA; FUNGI; VIRUSES; and PLANTS; though they may live parasitically.
Preferred term Parasites
Entry term(s) Parasite



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