PPP1R9A and lymphoma: To test whether IgG1-format neurabin-I BAR-bodies bind to lymphoma cells expressing neurabin-I reactive BCRs, U2932 cells (Figure 5A) and U2932 cells transfected with a neurabin-I reactive BCR (Figure 5B) were stained with 10 μg/ml IgG1-format neurabin-I BAR-body.