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. 2013 Mar 6;8(3):e58087. doi: 10.1371/journal.pone.0058087

Figure 9. The inhibitory effect of human CD28 autoantibodoes is titer-dependent.

Figure 9

Jurkat cells were incubated with sera derived from patient #64 that had been collected at different time points and that showed different titers of CD28 autoantibodies. Sera derived from a healthy donor (HD) or from a melanoma patients without CD28 autoantibodies were used as control. Cell viability was measured by EZ4U assay.