Experiment AAV Tropism project Experiment Condition AAV3b males Assay Description: Cre activity was assessed by image quantification Tissue Measured: small intestine Measurement Type: Editing Efficiency Record ID 15000001750 Editor Delivery System AAV Delivery System Subtype Viral vector Guide Vector AAV3b-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 2.49  1 9.8  2 0  3 0.1  4 0.06  Measurement Units: GC/ug DNA Mean 93  1 277  2 94  3 23  4 34  5 102  6 28

AAV3b small intestine AAV serotypes delivering Cre recombinase were tested by intravenous delivery into Ai9 mice and chacterized by imaging