Ontology highlight
ABSTRACT:
SUBMITTER: Seagle BL
PROVIDER: S-EPMC1157035 | biostudies-literature | 2005 Jun
REPOSITORIES: biostudies-literature
Seagle Brandon-Luke L BL Rezai Kourous A KA Kobori Yasuhiro Y Gasyna Elzbieta M EM Rezaei Kasra A KA Norris James R JR
Proceedings of the National Academy of Sciences of the United States of America 20050610 25
Time-resolved electron paramagnetic resonance (TREPR) spectroscopy was used to study melanin free radicals in human retinal pigment epithelium (RPE) cells and tyrosine-derived synthetic melanin. TREPR signal traces from RPE cells reveal in vivo light-induced melanin free radical photochemistry in more detail than previously known. Electron spin polarization reflecting a non-Boltzmann population within the energy levels of the spin system is observed in RPE cells as the result of the triplet stat ...[more]