Assertion: formaldehyde's effect | /r/HasProperty | basf ag
Facets:
Source sentences:
text: No local clastogenic effects but histopathological effects and cell proliferation in the nasal cavity of 3 rats has been shown after repeated inhalation exposure to 20 ppm (only one dose level tested) for 6 h on each of 5 consecutive days (BASF AG, 2001).