{HEAD ~ Method} 1, wherein {TAIL ~ the polyethylene glycol} used as precipitating agent has a molecular weight of from 3000 to 6000 
wherein
{ HEAD ~ Method } 1 , wherein { TAIL ~ the polyethylene glycol } used as precipitating agent has a molecular weight of from 3000 to 6000
HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH