title: pH control of the chlorophyll a fluorescence in algae.
mesh_terms: D002734:Chlorophyll / Q000528:radiation effects*; D000460:Chlorophyta / Q000528:radiation effects*; D000458:Cyanobacteria / Q000187:drug effects / Q000528:radiation effects*; D005453:Fluorescence; D005470:Fluorometry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008027:Light; D011830:Radiation Effects; D014508:Urea / Q000494:pharmacology
chemical_list: D002734:Chlorophyll; D014508:Urea