Billion-dollar orphans: prescription for trouble.
Gibbons
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D000163:Acquired Immunodeficiency Syndrome / Q000188:drug therapy* / Q000191:economics; D000243:Adenosine Deaminase / Q000600:supply & distribution*; D004345:Drug Industry / Q000191:economics*; D006801:Humans; D007880:Legislation, Drug; D009700:Nucleoside Deaminases / Q000600:supply & distribution*; D009965:Orphan Drug Production / Q000191:economics*; D014481:United States
D009700:Nucleoside Deaminases; D000243:Adenosine Deaminase; C051409:pegademase bovine