Question: You said you use fruit flies to research the build-up of toxic proteins in the brain in a rare form of dementia. 1 - Is it familial Alzheimer's Disorder? If yes, are the toxic proteins tau and amyloid plaques? 2 - Do you modify the genes of the fruit flies so they develop dementia? 3 - How can you measure the amount of toxic protein? 4 - Do the fruit flies exhibit any symptoms of dementia, other than the build-up of proteins?