Skrjabingylus Nasicola
''Skrjabingylus nasicola'' is a species of parasitic nematode in the family Metastrongylidae. Its lifecycle includes an intermediary mollusc host and a paratenic host, a shrew or small rodent. Adult worms are found in the nasal sinuses of mustelids. Infection Hansson (1977) showed that direct transmission of the nematode from mustelid to mustelid did not occur, nor did infection occur when the mustelid was fed on small rodents, amphibians, molluscs, arthropods, or Oligochaeta, earthworms. Infection could occur when the animal was fed on the common shrew (''Sorex aranea'') and larvae of the nematode begin to be excreted by the mustelid some three weeks later. Research since then has shown that rodents can be a source of infection for mustelids. Lifecycle ''Skrjabingylus nasicola'' has a complex Biological life cycle, lifecycle. Larvae passed in the faeces of infected mustelids are ingested by slugs such as ''Deroceras reticulatum''. Mustelids do not usually eat molluscs, but the ...
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Microscope
A microscope () is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope. There are many types of microscopes, and they may be grouped in different ways. One way is to describe the method an instrument uses to interact with a sample and produce images, either by sending a beam of light or electrons through a sample in its optical path, by detecting photon emissions from a sample, or by scanning across and a short distance from the surface of a sample using a probe. The most common microscope (and the first to be invented) is the optical microscope, which uses lenses to refract visible light that passed through a thinly sectioned sample to produce an observable image. Other major types of microscopes are the fluorescence microscope, electron microscope (both the transmi ...
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