Single strand DNA/RNA immunoprecipitation followed by sequencing (DRIP-Seq) was performed in retinas from four adult mice (P28). Briefly, Genomic DNA from one retina was enzymatically digested, treated with RNase III with or without RNase H and immunoprecipitated with the DNA/RNA hybrid antibody S9.6. After elution, gDNA was further sonicated. Libraries were constructed using the Accel-NGS 1S Plus DNA Library Kit (IDT technologies Coralville, IA, USA). One library was prepared per mouse (n = 4).