Experiment AAV Tropism project Experiment Condition AAVrh74 males Assay Description: Cre activity was assessed by image quantification Tissue Measured: epididymis Measurement Type: Editing Efficiency Record ID 15000002115 Editor Delivery System AAV Delivery System Subtype Viral vector Guide Vector AAVrh74-ZsGreen-Cre; Model Species Mouse Model Name B6.Cg-Gt(ROSA)26Sor ^ tm9(CAG-tdTomato)Hze/J Sample Age 6 weeks Sample Sex Male Application Method intravenous Application Site systemic Dosage 1E12 GC/mouse Injection Frequency once Injection Rate Injection Volume 150 microliters Days post injection 28 days Editor Format Antidote Id Antidote Description Measured Values Samples Size: 4   Replicate Result (Editing Efficiency) Measurement Units: % cells tdTomato positive Mean 22.65  1 15.34  2 12.82  3 37.54  4 24.9  Measurement Units: GC/ug DNA Mean 14006.67  1 21368  2 47176  3 368  4 7082  5 5064  6 2982

AAVrh74 epididymis AAV serotypes delivering Cre recombinase were tested by intravenous delivery into Ai9 mice and chacterized by imaging