PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 25666432-6 2015 The ability of the PSs to initiate Type I photoreactions was tested by exposing PS-treated U87 cells to light under hypoxic conditions (pO2 < 0.5%), which resulted in a complete loss of the PDT effect. PO-2 136-139 small nucleolar RNA, C/D box 87 Mus musculus 91-94