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Discontinuing the use of exogenous testosterone if someone is taking it will improve fertility, but it can take up to a year for normal sperm production to return

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The author thanks Jieun Cha, Senior Researcher at the COSMAX R&I Center, for her valuable advice and contributions

mGluRs are G protein-coupled receptors (GPCRs) that, following activation, regulate both G protein-dependent and G protein-independent signalling pathways
