Examples of {HEAD ~ functional units} that may be coupled to nucleic acids include chemically reactive groups, photoreactive groups, active site directed compounds, {TAIL ~ lipids}, biotin, proteins, peptides and fluorescent compounds 
include
Examples of { HEAD ~ functional units } that may be coupled to nucleic acids include chemically reactive groups , photoreactive groups , active site directed compounds , { TAIL ~ lipids } , biotin , proteins , peptides and fluorescent compounds
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH