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  ______     ___    __    __     ___      ______  
 /_   _//   / _ \\  \ \\ / //   / _ \\   /_____// 
   | ||    / //\ \\  \ \/ //   | / \ ||  `____ `  
  _| ||   |  ___  ||  \  //    | \_/ ||  /___//   
 /__//    |_||  |_||   \//      \___//   `__ `    
 `--`     `-`   `-`     `       `---`    /_//     
                                         `-`

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Text this: CXCR4-tropic, but not CCR5-tropic, human immunodeficiency virus infection is inhibited by the lipid raft-associated factors, acyclic retinoid analogs, and cholera toxin B subunit