Fig. 4

Isolated nanobodies can neutralize AFB1-induced hepatocyte growth inhibition by binding to AFB1. A The growth inhibitory effect of AFB1 at multiple concentrations in CL48 normal human liver cells and HepG2.2.15 human hepatoblastoma cells was measured after 48 h of treatment. B Nanobodies A1 (nb A1) and F2 (nb F2) interacted with AFB1 at a specified concentration; the protective effect on cell growth was monitored after treating HepG2.2.15 cells with AFB1 for 48 h; ***P < 0.001. An irrelevant nanobody (nb NC) that did not recognize AFB1 was used as the negative control