https://researchconnect.buffalo.edu/en/publications/phospholipase-c-rescues-visual-defect-in-norpa-mutant-of-drosophi/
Phospholipase C rescues visual defect in norpA mutant of Drosophila melanogaster - SUNY University...
https://www.wikidata.org/wiki/Q52518863
Defective phospholipid metabolism in the retinular cell membrane of norpA (no receptor potential)...
scientific article published in March 1983