crispr_therapy: no-
drug: etoposide
drug: etoposide, crispr_therapy: etoposide (50um, 3hr)
drug: etoposide, crispr_therapy: no-
drug: etoposide, crispr_therapy: pks+ e.coli infection (moi20, 3hr)
drug: etoposide, crispr_therapy: pks- e.coli infection (moi20, 3hr)