FIG. 3.

Effect of glucose on neutralization of influenza virus by SP-D. A/Phil/82 virus was incubated with (•) or without (○) recombinant rat SP-D (final concentration, 2 μg/ml) in the absence or presence of increasing concentrations of glucose (5 to 25 mM) for 60 min at 37°C, and the residual infectivity of the samples was determined by fluorescent focus assay on MDCK cell monolayers.