LHCGR and infection: To assess the infection efficiency and specificity of AAVDJ in testicular cells, we injected AAVDJ carrying the CAG‐mCherry reporter vector at varying doses (8 × 108, 8 × 109 and 8 × 1010 gc/testis) into the testes of 8‐week‐old Lhcgr−/− mice.