{HEAD ~ Homology}, used interchangeably herein with the term identity refers to sequence {TAIL ~ similarity} between two protein or between two nucleic acid molecules 
refers to sequence
{ HEAD ~ Homology } , used interchangeably herein with the term identity refers to sequence { TAIL ~ similarity } between two protein or between two nucleic acid molecules
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH