1 Biopsy and stool samples were examined for infective agents.

2 No other concomitant infective agents have been implicated in the course of the disease to date.

3 However, the amount of the infective agent needed to.

4 Contiguous safe time and safe distance to infective agent of IBV still need to be further studied.

5 The ability of the infective agent to survive in man's environment is an important factor in the epidemiology of the infection.

6 The frequency of gastrointestinal symptoms was not consistently increased in patients harbouring specific infective agents compared with non-infected patients.

7 The occurence of the disease is related to pathological type, infective agent, nonstandard application of hormone, hyperlipemia and hypercoagulability.

8 It mainly has the heredity, the energetic nerve, endocrine, the infective agent or the extraneous factor and so on.

9 The anti - infective medical PVC is prepared by compounding anti - infective agent and medical PVC.