Antibody secreting cells (ASC).

<p>Antibody secreting cells (ASC) from spleen and bone marrow. A: Mouse spleen monolayer cells were prepared at day 4 post challenge. ASC were determined after 2 or 6 days of in vitro culture specific to A/California/04/2009 virus. B: Antibody secreting cells (ASC) from bone marrow. Cells from mouse bone marrow at day 4 post challenge were prepared in vitro. ASC for IgG was determined after cultured in vitro for 2 or 6 days to A/California/04/2009 virus.