Consequently, a polynucleotide comprising a nucleotide sequence of at least one of 60 contiguous nucleotides derived from a nucleotide sequence selected from the group consisting of SEQ ID NOs:1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27 and the complement of such nucleotide sequences may be used in such methods to obtain a nucleic acid fragment encoding {HEAD ~ a substantial portion} of {TAIL ~ an amino acid sequence} of a polypeptide 
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Consequently , a polynucleotide comprising a nucleotide sequence of at least one of 60 contiguous nucleotides derived from a nucleotide sequence selected from the group consisting of SEQ ID NOs:1 , 3 , 5 , 7 , 9 , 11 , 13 , 15 , 17 , 19 , 21 , 23 , 25 , 27 and the complement of such nucleotide sequences may be used in such methods to obtain a nucleic acid fragment encoding { HEAD ~ a substantial portion } of { TAIL ~ an amino acid sequence } of a polypeptide
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