Over the last decade the molecular characterization of melanoma has progressed. Since a majority of melanoma cases arise from repeated intermittent ultra violet radiation (UVR) exposure, the role of UVR has been evaluated extensively. Recent work has identified two mechanisms in which the carcinogenesis of melanoma may result; Ultra violet radiation has been demonstrated to lead to down regulat...

The study of the absorption curves in the ultra-violet region of the spectrum has been confined chiefly to the blood serum and its proteins. Lewis ~ has examined the ultra-violet absorption of blood serum and claims to have found in this way the existence of specific changes in the blood with certain diseases. This same author 2 has also published absorption curves of the three chief proteins o...

Determinations of the temperature coefficient of inactivation of pure crystalline pepsin solutions by ultra-violet irradiation give values very close to unity (1.02).