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Lack of abnormality in this rat model challenges essentiality claims but is not by itself a complete human requirement experiment.\nexposure: AIN-93G with no added chromium versus standard diet and supplemental 200 or 1,000 µg Cr/kg\nevidence_span: {\"source_cache\": \"artifacts/chromium-research/21086001.abstract.txt\", \"locator\": \"Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"308018cb4483d2b09c61c09f63a45811cc801750fd4f7922b8c9f010f5165abd\", \"start_char\": 0, \"end_char\": 1561, \"text_sha256\": \"308018cb4483d2b09c61c09f63a45811cc801750fd4f7922b8c9f010f5165abd\"}\n[chromium-p21086001] Chromium is not an essential trace element for mammals: effects of a \"low-chromium\" diet. 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