Does anyone have problems performing CRISPR KO in human primary T cells?

For the past few months, I have been troubleshooting a CRISPR KO of human CD3e in human primary T cells. I got the KO to work one time using 1250 ng TrueCut Cas9 (Thermo) + 250 ng (or 7.5 pmol)...

12 January 2021 6,159 3 View