{HEAD ~ The present invention} relates to {TAIL ~ a simple, inexpensive and very effective method} for crystallization of a protein with a salt 
relates to
{ HEAD ~ The present invention } relates to { TAIL ~ a simple , inexpensive and very effective method } for crystallization of a protein with a salt
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH