Mutations in Drosophila Swiss cheese (SWS) or its vertebrate orthologue neuropathy target esterase (NTE). respectively. cause progressive neuronal degeneration in Drosophila and mice and a complex syndrome in humans that includes mental retardation. spastic paraplegia and blindness. https://www.rxkaitori.com/product-category/philips-hid-pv-s-sdw-tg/