What is required is that the composition contain {HEAD ~ an effective amount} of {TAIL ~ immunologically active immunoglobulins} that are preferably present in concentrated form 
of
What is required is that the composition contain { HEAD ~ an effective amount } of { TAIL ~ immunologically active immunoglobulins } that are preferably present in concentrated form
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH