castoreum
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http://purl.obolibrary.org/obo/UBERON_0036015
A yellowish pungent liquid that is a mixture of the castor sacs (an anal gland in the taxon Castoreum) and urine. [ http://www.jstor.org/stable/2425894 http://purl.obolibrary.org/obo/UBERON_rc ]