Chandrasekaran et al. [24] demonstrated that a specific structural
conformation, not the SA-a-2,6-Gal linkage alone, de-
by guest on April 3, 2015 http://cid.oxfordjournals.org/ Downloaded from
280 • CID 2009:49 (15 July) • EMERGING INFECTIONS
termines viral binding to upper respiratory tract SA-a-2,6-Gal
receptors, illustrating the complexity of receptor specificity