umls-concept:C0003682 | skos:definition | CSP: simple five carbon sugar widely distributed in plants in the form of complex polysaccharides, glycosides, and mucilages; also occurs in some bacteria.,NCI: A pentose which is an epimer at C-2 of ribose (in Fisher projection). A diastereomer at C-2 and C-3 of xylose (in Fisher projection). | lld:umls |