c("cell line: HEK293", "modified nucleotide: 4SU", "crosslinking: 365nm", "sirna transfection: none")
c("cell line: HEK293", "modified nucleotide: 4SU", "crosslinking: 365nm", "sirna transfection: none")
c("cell line: HEK293", "modified nucleotide: 4SU", "crosslinking: none", "sirna transfection: none")
c("cell line: HEK293", "modified nucleotide: 4SU", "crosslinking: none", "sirna transfection: none")
c("cell line: HEK293", "modified nucleotide: none", "crosslinking: 254nm", "sirna transfection: none")
c("cell line: HEK293", "modified nucleotide: none", "crosslinking: 254nm", "sirna transfection: none")
c("cell line: HEK293", "modified nucleotide: none", "crosslinking: none", "sirna transfection: none")
c("cell line: HEK293", "modified nucleotide: none", "crosslinking: none", "sirna transfection: none")
c("cell line: HEK293", "modified nucleotide: none", "crosslinking: none", "sirna transfection: anti-GFP")
c("cell line: HEK293", "modified nucleotide: none", "crosslinking: none", "sirna transfection: anti-HuR")