Planas-Bohne F
Experientia. 1977 Mar 15;33(3):379. doi: 10.1007/BF02002838.
In rats red cell delta-aminolevulinic acid dehydratase is inhibited by Ca-DTPA only after treatment with toxic doses or with fractionated therapeutic doses. Zn-DTPA does not influence the activity of the enzyme even after administration of high doses.