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This chemical sunscreen is a creamy white lotion that rubs in easily and appears ... Titanium dioxide and zinc oxide are the active ingredients that can be found in physical sunscreens that ...

It is also present in small quantities in rain from areas where nitric oxide (a product of combustion) reacts with ozone and water to form nitric acid. People living near industries that produce or ...

Department of Medicine, Pulmonary Disease and Cardiology Section, Veterans Affairs Medical Center and SUNY Upstate Health Science Center, Syracuse, New York 13210, USA BACKGROUND Inhalation of nitric ...