Vaccination of Bb-infected mice fails to induce protective anti-viral antibody responses

<p>Serum from BALB/cByJ mice vaccinated s.c. with influenza A/PR8 and either infected or not with Bb was harvested at 9 weeks after vaccination/infection and transferred i.v into individual recipient mice. Shown is % weight loss of individual recipients as a measure of protective capacity of the serum after i.v. serum adoptive transfer and i.n. infection with A/PR8. Each line represents one mouse, which was the recipient of serum from one donor mouse. P<0.01 was determined using paired one-tailed Student’s <i>t</i> test.