Experimental Observation on The Dynamic Changes of Trichinella Spiralis in Host

Objective: To observe the developmental dynamics of Trichinella spiralis in the host. Methods: Ten female Kunming mice were involved in the experiments, each of which was infected with 100 Trichinella spiralis larvae. Two mice were respectively killed after the infection of 60 days, 120 days, 180 days, 300 days and 400 days. The cysts of Trichinella spiralis were detected with staining method. Results: After the infection of 60 days, the capsules were fully mature; 120 days later, inner layer began to appear transparent and inner layer were completely transparent up to 400 days. Conclusion: The longer the infection time, the fuller the capsule developed, that it is, the development trend was the shape from the spindle to the ovoid to the circular, and the inner layer of transparency gradually increased.