Objectives There are some common occupational agents and exposure circumstances for
which evidence of carcinogenicity is substantial but not yet conclusive for humans. Our …

Arc welding processes generate complex aerosols composed of potentially hazardous metal
fumes and gases. Millions of workers worldwide are exposed to welding aerosols daily. A …

Background Although major concerns exist regarding the potential consequences of human
exposure to nanoparticles (NP), no human toxicological data is currently available. To …

Background Cellulose-based materials have been used for centuries to manufacture
different goods derived from forestry and agricultural sources. In the growing field of …

Background Welding fumes consist of a wide range of complex metal oxide particles which
can be deposited in all regions of the respiratory tract. The welding aerosol is not …

Background Chronic inflammation is implicated in the development of several human
cancers, including lung cancer. Certain particulate hexavalent chromium [Cr (VI)] …

Background Welders are exposed to many known and suspected carcinogens. An excess
lung cancer risk among welders is well established, but whether this is attributable to …

Abstract PM2. 5-induced airway injury contributes to an increased rate of respiratory
morbidity. However, the relationship between PM2. 5 toxicants and acute cytotoxic effects …

Certain particulate hexavalent chromium [Cr (VI)] compounds are human respiratory
carcinogens that release genotoxic soluble chromate, and are associated with fibrosis …

For over a century, chromium (Cr) has found widespread industrial and commercial use,
namely as a pigment, in the production of stainless steel and in chrome plating. The adverse …