Experiment AAV Tropism project Experiment Condition AAVrh74 males Assay Description: Cre activity was assessed by image quantification Tissue Measured: gastrocnemius Measurement Type: Editing Efficiency Record ID 15000002101 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 87.82  1 89.17  2 94.48  3 78.3  4 89.32  Measurement Units: GC/ug DNA Mean 172249.2  1 385021  2 236939  3 77391  5 101655  6 60240

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