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Knowledge organization
A field of study invloving the indexing and classification of knowledge that is usually performed in libraries, databases and archives etc. It is related to Library and Information Science(LIS).
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poboscis
Biology; Parasitology
In tapeworms, an anterior protrusile organ, typically studded with hooks as in the dog tapeworm Dipylidium caninum. A protruding structure at the anterior end of some insects.
polar filaments
Biology; Parasitology
Filaments arising from the opposite poles of the onchosphere membrane of Hymenolepis nana.
polar plugs
Biology; Parasitology
Mucoid plugs that are located at both ends of eggs of Trichuris and other members of the family Trichuridae.
prepatent period
Biology; Parasitology
The span of time from infection until the infection is detectable. The biological incubation period, usually between infection and initial clinical manifestations.
procercoid
Biology; Parasitology
The first larval stage of pseudophyllidian tapeworms which develops from the onchosphere; it contains a body proper and a caudal vestige of the onchosphere, the Cercomer.