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Artistic representation of the secondary structure prediction from a neural network analysis of the principal neutralization determinant of HIV-1. The {beta} sheets are shown by arrows and {alpha} helices by spirals. See page 932. [Illustration by Elizabeth Bothwell, Gregory LaRosa, and Scott Putney; neural network analysis by L. Howard Holley and Martin Karplus]


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Science. ISSN 0036-8075 (print), 1095-9203 (online)