L-dopa is effective against Parkinson's, but its enantiomer D-dopa is not. An enantiomers drug may not be equally effective. The enantiomer, in chemistry, is one of two stereoisomers that are mirror images of each other that are non-superposable, much as one's left and right hands are the same except for being reversed along one axis. It is also known as an optical isomer.
Accomplishments of the National Association for the Advancement of Colored People (NAACP) range from helping establish reform to building strong communities. The group helped promote civil rights and played a part in ending segregation.
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