Multiple sclerosis is a disease in which the immune system mistakenly destroys

If an artist were to blend red, green, and blue lights together by focusing lights of those three colors on one common spot, the result would look __________

a) like nonspectral colors b) black c) like white light d) complimentary

Narcolepsy is apparently due to a loss of ___ secreting neurons, which may be due to ___

a. serotonin; an autoimmune response b. serotonin; a mutation in the REM clock c. orexin; an autoimmune response d. orexin; a mutation in the REM clock