...well in sparse/individual cultures due to lack of secreted growth factors, so not every cell type will be...cell growth, such as using culture medium with increased serum concentrations, may be optimal for different...monoclonal lines have been sufficiently expanded, screen the lines for transgene expression and/or other...phenotypes. For example, perform Western blotting to screen for lines with the highest or lowest transgene ... vectors and genome-wide libraries for CRISPR screening. Sanjana NE, Shalem O, Zhang F. Nature Methods...