Human growth factor-Fc fusion protein(Changchun Institute of Biological Products )

Primary objective: To evaluate the safety and tolerability of human growth hormone-Fc fusion protein injection after a single subcutaneous injection in healthy adult male subjects. Secondary objective: To evaluate the pharmacokinetic (PK) characteristics of human growth hormone-Fc fusion protein injection after a single subcutaneous injection in healthy adult male subjects. To evaluate the pharmacodynamic (PD) characteristics of human growth hormone-Fc fusion protein injection after a single subcutaneous injection in healthy adult male subjects. To evaluate the immunogenicity of human growth hormone-Fc fusion protein injection after a single subcutaneous injection in healthy adult male subjects.