![High Concentrations of Recombinant Soluble CD4 are Required to Neutralize Primary Human Immunodeficiency Virus Type 1 Isolates]()
High Concentrations of Recombinant Soluble CD4 are Required to Neutralize Primary Human Immunodeficiency Virus Type 1 IsolatesEric S. Daar, Xi Ling Li, Tarsem Moudgil and David D. Ho · Proceedings of the National Academy of Sciences of the United States of America · 1990