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Standardization
Standardization is the process of developing and implementing technical standards.
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source of infection
Biology; Parasitology
The medium (e.g., soil), object (e.g. eating utensil), or a living entity (e.g. a snail or mammal) containing an infective stage of a parasite.
sparganum
Biology; Parasitology
The second larval stage (see Plerocercoid) of pseudophyllidian tapeworms that is characterized by its elongated shape and lack of a cystic cavity.
sporocyst
Biology; Parasitology
In trematodes, the first larval stage in the developmental cycle in the snail, intermediate host. A sac-like " structure with a germinal lining that produces secondary larval ...
sporozoite
Biology; Parasitology
The structure (infective unit) that develops within an oocyst that, when freed from the oocyst after ingestion by a suitable host, penetrates the intestinal wall initiating ...
spurious infection
Biology; Parasitology
False infection. An organism or egg found on fecal examination that is from a source outside of the individual and is not related to an infection of the individual being examined; ...
stage
Biology; Parasitology
Any particular form in the life cycle of a parasite which can be distinguished from all of its other forms.
strobila
Biology; Parasitology
A complete tapeworm consisting of scolex, neck, and immature, mature, and usually gravid proglottids.