Abstract
RECENT work on opal-phytoliths1–4 has led to searches for these microscopic bodies of amorphous silica in the body of a sheep. This is a typically herbivorous animal that ingests significant quantities of silica as integral parts of its plant food.
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BAKER, G., JONES, L. Opal in the Animal Body. Nature 189, 682–683 (1961). https://doi.org/10.1038/189682a0
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DOI: https://doi.org/10.1038/189682a0
