Prove the cell line is what you say it is, or the paper does not run

Short tandem repeat profiling costs little and detects misidentification and cross-contamination, yet compliance is patchy. Mandatory deposition of STR profiles (and, for patient-derived models, low-pass sequencing confirming donor identity and drift) at submission, checked automatically against the register of misidentified lines, would remove a known and fully solvable source of irreproducibility. Some journals already require it; enforcement is inconsistent.