    Sentence 1:-They used discarded: skin ftom  consenting. ‘patiénts:» who.had'. undergone  surgery. and exposed ° it ‘to’ UVA®:light ‘at  intensitiés' sirtilar-to that of sunlight.    ‘Sentence ‘2: Sanders and célleagues: dt RAFT.  exposed: ' skin’. “samples. removed.’ .from  consenting: patients. ‘during. surgery to UA.  light at intensities sirnilar:to that of sunlight :