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Binding of respiroviruses to gangliosides in solid-phase binding assays. The binding activities of SV (A), hPIV-1 (B), and hPIV-3 (C) were calculated as the mean values of triplicate measurements of the absorbance at 490 nm (A490) after the subtraction of background values. Symbols: ●, NeuAcα2–3I; ○, NeuAcα2–3PG; ♦, GM1a and GD1b; ⋄, GD1a; ▴, NeuAcα2–3i; ▵, GQ1b; ▪, GT1b; □, GM3.
