Reduction in the amount of glutathione (GSH) in cells can lead to increased sensitivity to physical and chemical agents. Methacrylate monomers (MM) are precursors of polymethacrylates which are used in dental and medical biomaterials and in a wide variety of other products. MM can increase cell sensitivity to long wavelength ultraviolet and visible radiation. The aim of this study is to elucidate if MM can induce sensitivity also to shorter wavelength radiation.

Organisms living in aquatic ecosystems may experience high doses of natural UV radiation. UV radiation penetrates the water column down to several meters. The penetration depth differs depending on the contents of particles, dissolved matter or pollutants. The aim of this study was to establish the dose-response relationship of phenotypic changes caused by UV.

Pelagic embryos of fish may be exposed to high doses of natural UV radiation. Shortwave UV, UVB, as well as UVA may penetrate the water column to depths of several meters. The penetration depth differs depending on the contents of particles, dissolved matter or pollutants. Pollutants may also interact photochemically with UV- and visible radiation.