Fig. 3From: Evaluation of the inverse electron demand Diels-Alder reaction in rats using a scandium-44-labelled tetrazine for pretargeted PET imagingUptake values of [44Sc]3 in Wistar rats. a Ex vivo biodistribution 4 h p.i. of rats pre-treated with 2 or saline 1 h prior to administering 9–12 MBq of [44Sc]3. b Select bone soft tissue ratio of [44Sc]3 in rats pre-treated with 1 or salineBack to article page