{HEAD ~ One embodiment} of the invention is directed to a process for the chemical modification of organic compounds to form {TAIL ~ immunogens} 
{ HEAD ~ One embodiment } of the invention is directed to a process for the chemical modification of organic compounds to form { TAIL ~ immunogens }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL