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・ Gastrointestinal intraepithelial neoplasia
・ Gastrointestinal neuroectodermal tumor
・ Gastrointestinal Nursing
・ Gastrointestinal pathology
・ Gastrointestinal perforation
・ Gastrointestinal physiology
・ Gastrointestinal series
・ Gastrointestinal stromal tumor
・ Gastrointestinal wall
・ Gastrojejunocolic fistula
・ Gastrol
・ Gastrolactarius
・ Gastroleccinum
・ Gastrolepta
・ Gastrolepta anthracina
Gastrolith
・ Gastrolobium
・ Gastrolobium bilobum
・ Gastrolobium celsianum
・ Gastrolobium coriaceum
・ Gastrolobium grandiflorum
・ Gastrolobium leakeanum
・ Gastrolobium lehmannii
・ Gastrolobium melanopetalum
・ Gastrolobium minus
・ Gastrolobium praemorsum
・ Gastrolobium propinquum
・ Gastrolobium rubrum
・ Gastrolobium sericeum
・ Gastrolobium spinosum


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Gastrolith : ウィキペディア英語版
Gastrolith

A gastrolith, also called a stomach stone or gizzard stones, is a rock held inside a gastrointestinal tract. Gastroliths in some species are retained in the muscular gizzard and used to grind food in animals lacking suitable grinding teeth. In other species the rocks are ingested and pass through the digestive system and are frequently replaced. The grain size depends upon the size of the animal and the gastrolith's role in digestion. Other species use gastroliths as ballast. Particles ranging in size from sand to cobbles have been documented.
==Etymology==
''Gastrolith'' comes from the Greek ''gastro'' meaning ''stomach'' and ''lithos'' meaning ''stone''.

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