Anti-wubu snake venom serum(Jiangxi Institute of Biological Products)

Primary objective: To evaluate the safety and tolerability of a single intravenous injection of anti-Five-Step Snake venom serum in healthy adult subjects. Secondary objectives: 1. To evaluate the pharmacokinetic (PK) characteristics of a single intravenous injection of anti-Five-Step Snake venom serum in healthy adult subjects; 2. To evaluate the immunogenicity characteristics of a single intravenous injection of anti-Five-Step Snake venom serum in healthy adult subjects.