Viral particles deposited on the surface of infected cells cultured with S139/1 IgA.

<p>MDCK cells were infected with Aichi/H3 and incubated for 8 hours in the presence of S139/1 IgA (A and D), IgG (B and E), or in the absence of antibodies (C and F). TEM images of the cell surface are shown at high (A to C) and low (D to F) magnifications. Scale bars represent 1 µm (A to C) and 2 µm (D to F).