An isolated nucleic acid molecule comprising a nucleotide sequence that is at least 95% homologous to a portion of the nucleotide sequence shown in SEQ ID NO:6, or a complement thereof, wherein the portion encodes a peptide sequence at least 30, 40, 60, 80, 100, 140 or 200 residues in length, of SEQ ID NO:7, and wherein {HEAD ~ the peptide} encoded by {TAIL ~ the nucleic acid molecule} is not the full length Der f VII protein amino acid sequence shown in SEQ ID NO:7 
An isolated nucleic acid molecule comprising a nucleotide sequence that is at least 95 % homologous to a portion of the nucleotide sequence shown in SEQ ID NO:6 , or a complement thereof , wherein the portion encodes a peptide sequence at least 30 , 40 , 60 , 80 , 100 , 140 or 200 residues in length , of SEQ ID NO:7 , and wherein { HEAD ~ the peptide } encoded by { TAIL ~ the nucleic acid molecule } is not the full length Der f VII protein amino acid sequence shown in SEQ ID NO:7
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