A competitor for {HEAD ~ human Immunoglobulin E} comprises a polypeptide which has {TAIL ~ a core sequence} of seventy six amino acids which is shown, together with the corresponding DNA sequence coding therefor, in FIG 2 
A competitor for { HEAD ~ human Immunoglobulin E } comprises a polypeptide which has { TAIL ~ a core sequence } of seventy six amino acids which is shown , together with the corresponding DNA sequence coding therefor , in FIG 2
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH