Labeled Oxygen: Transport through Growing Corn Roots

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Science  01 May 1964:
Vol. 144, Issue 3618, pp. 550-552
DOI: 10.1126/science.144.3618.550


Oxygen, labeled with oxygen-18, is transported across wax membranes penetrated by growing corn roots. The rate of transport is a linear function of the number of penetrating roots. Other factors also influence the rate of transport.