Fig. 7: Kaplan-Meier survival curves for mice challenged with α-cobratoxin and VHHs.

A 3 × LD50s of α-cobratoxin was preincubated with either PBS or one of the VHHs and injected intravenously in mice. B Three LD50s of α-cobratoxin were injected subcutaneously, and 5 min later, VHH was injected intravenously. n = 3; * indicates a significant difference to PBS control (P < 0.05) in a Mantel-Cox log-rank test.