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Biodistribution of radioiodinated biotin derivatives in mice at 1 and 4 h post injection. Dark blue bars show concentrations of biotin derivative containing the closo-decaborate(2-) moiety ([131I]3b) at 1 h pi and light blue bars show concentrations of that compound at 4 h pi. Dark green bars show concentrations of biotin derivative containing closo-dodecaborate ([125I]4b) at 1h pi and light green bars show concentrations of that compound at 4 h pi.
