Figure 6.

Ν2A cell apoptosis of cells in medium (A), exposed to the influenza vaccine (B) and (C) in the simultaneous presence of influenza vaccine and antibodies against H1N1. Similar effects were observed when antibodies to H3N2, and S. Typhi were used. The antibodies were added to the culture medium simultaneously with the corresponding vaccine for two days. In the presence of the influenza vaccine, most nuclei were stained red with TUNEL indicating apoptosis (B), whereas, in the combined presence of the influenza vaccine and anti-H1N1 antibodies (C), most nuclei appeared healthy and stained with DAPI, similar to control cells cultured in medium (A).