RFP siRNA sense UGUAGAUGGACUUGAACUCdTdT; antisense GAGUUCAAGUCCAUCUACAdTdT. Scrambled control sense UGAAGUUGCACUUGAAGUCdTdT; antisense GACUUCAAGUGCAACUUCAdTdT. 5′ thiol-modified for polymerization to poly-siRNA.; 5' thiol-modified for polymerization to poly-siRNA; 5' thiol; dTdT; 3' dTdT/TT overhang