With stem cells, the main risk is not the sort of chemicaltoxicity associated with a drug; rather it is of an unusual type of tumour called a teratoma.
对干细胞来说，主要的风险不在于药物引起的细胞毒性；而是一种叫做畸胎瘤的非常见肿瘤。
2
Quantitative structure activity relationship (QSAR) plays an obvious role in the study and use of toxicology. The prospect of application of QSAR in chemicaltoxicity research is summarized.
Abiotic stresses, such as drought, salinity, extreme temperatures, chemicaltoxicity, and oxidative stress, are serious threats to agriculture and result in the deterioration of the environment.