Adjuvants are {TAIL ~ substances} that can be used to nonspecifically augment {HEAD ~ a specific immune response} 
Adjuvants are { TAIL ~ substances } that can be used to nonspecifically augment { HEAD ~ a specific immune response }
OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD