{TAIL ~ The present invention} relates to immunogenic preparations of peptides comprising amino acid sequences corresponding to antigenic determinants of the envelope glycoprotein of HIV, covalently coupled, directly or through a spacer molecule, to {HEAD ~ carrier molecules} suitable for vaccination of mammals 
{ TAIL ~ The present invention } relates to immunogenic preparations of peptides comprising amino acid sequences corresponding to antigenic determinants of the envelope glycoprotein of HIV , covalently coupled , directly or through a spacer molecule , to { HEAD ~ carrier molecules } suitable for vaccination of mammals
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