[Objective] To explore the immunological responses of common carp(Cyprinus carpio) after being vaccinated with Aeromonas veronii ghosts and formalin inactivated A. veronii vaccine. [Methods] The experiment was consisted of three treatments and conducted in cylindrical fiberglass tanks(260 L/tank): CLGs group injected with CL0901 ghost vaccine, FKC group with formalin killed cell vaccine and the control group with phosphate buffer solution(PBS). All treatments were injected on 1st, 15 th and 29 th day after ...