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 __   __   _    _               ______    ____    
 \ \\/ // | || | ||     ___    /_   _//  |  _ \\  
  \   //  | || | ||    /   ||   -| ||-   | |_| || 
  / . \\  | \\_/ ||   | [] ||   _| ||_   | .  //  
 /_//\_\\  \____//     \__ ||  /_____//  |_|\_\\  
 `-`  --`   `---`       -|_||  `-----`   `-` --`  
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Text this: Envelope glycoproteins of Human Immunodeficiency Virus type 1 variants issued from mother-infant pairs display a wide spectrum of biological properties