{HEAD ~ The present invention} relates to a cytometer, in particular, to {TAIL ~ a flow cytometer} 
relates to
{ HEAD ~ The present invention } relates to a cytometer , in particular , to { TAIL ~ a flow cytometer }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL