c("cell line: HAP1", "genotype/variation: ATF4 KO", "treatment: 2 mM histidinol, 24 hours")
c("cell line: HAP1", "genotype/variation: WT", "treatment: 2 mM histidinol, 24 hours")
c("cell line: HAP1", "genotype/variation: WT", "treatment: untreated")
c("cell line: HAP1", "genotype/variation: ATF4 KO", "treatment: untreated")