Experiment AAV Tropism project Experiment Condition AAV4 females Assay Description: Cre activity was assessed by image quantification Tissue Measured: gastrocnemius Measurement Type: Editing Efficiency Record ID 15000001801 Editor Delivery System AAV Delivery System Subtype Viral vector Guide Vector AAV4-ZsGreen-Cre; Model Species Mouse Model Name B6.Cg-Gt(ROSA)26Sor ^ tm9(CAG-tdTomato)Hze/J Sample Age 6 weeks Sample Sex Female 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 15.48  1 12.29  2 24.83  3 8.03  4 16.75  Measurement Units: GC/ug DNA Mean 26618.67  1 277  2 40351  5 39228

AAV4 gastrocnemius AAV serotypes delivering Cre recombinase were tested by intravenous delivery into Ai9 mice and chacterized by imaging