recently I came across this paper:
Genome-wide CRISPR Screen in a Mouse Model of Tumor Growth and Metastasis
It says in 67,405 single-guide RNAs (sgRNAs) there are 1000 control gRNAs. And I want to know what're they used for and how to calculate them to achieve the original goal as they should be of different read counts after sequencing.
THX~