chemical analogues / test chemicals exhibiting cell viability / Test chemicals / chemical and biological mechanisms / chemical identity / positive chemicals / volatile test chemicals / chemical-treated isotype control cells / tested chemicals / test chemical / i.e. chemicals / stock solutions / well-qualified cell bank / fresh stock solutions / chemical-treated cells / chemical / antibody solutions / chemicals / i . e .ii . e ..i . e .ei . e ..i . e . i . e .ci . e .hi . e .ei . e .mi . e .ii . e .ci . e .ai . e .li . e .si . e . / /