Experiment AAV Tropism project Experiment Condition AAV4 females Assay Description: Cre activity was assessed by image quantification Tissue Measured: heart Measurement Type: Editing Efficiency Record ID 15000001802 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 59.2  1 73.72  2 6.18  3 72.59  4 84.31  Measurement Units: GC/ug DNA Mean 199623  1 1438  2 81710  4 309665  5 245850  6 359452

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