Exposure of the immune cells to these detoxified proteins yields a strong response in the innate immune reaction that represents {HEAD ~ the immune systems initial response} to {TAIL ~ infectious agents} 
Exposure of the immune cells to these detoxified proteins yields a strong response in the innate immune reaction that represents { HEAD ~ the immune systems initial response } to { TAIL ~ infectious agents }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL