Recycling

Recycling

The processing of used materials or waste into new products to prevent the waste of potentially useful waste material, reduce consumption of fresh material, as well as reduce energy consumption and environmental pollution.

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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; ...