Specific Substances: Silica, crystalline - quartz
Nomination Date: 04/11/1994
Nominator: Private Individual
Rationale: To establish whether the carcinogenic risk of crystalline silica is because it is a traditional carcinogen that interacts with nuclear macromolecules or because of an epigenetic process associated with cell damage and healing.
NTP Principles: not specified
Status: In Review/Pending