A selective metabotropic glutamate 1 receptor (mGlu1) antagonist was labeled with the positron-emitting radioisotope carbon-11 and evaluated in ex vivo biodistribution studies and micro-positron emission tomography (micro-PET) imaging experiments in rats. Results from animal experiments demonstrate that the radioligand [11C]2 is the first PET tracer capable of labeling the rat mGlu1 receptor in vivo.
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Huang et al. (2005) studied this question.
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