1. Juvenility cofactors have been identified as terpenes.

2. Juvenility confactors have been identified as terpenes.

3. The juvenility of theory and practice makes us carry through further theoretic discussion necessarily.

4. Liability insurance, as juvenility in insurance the purpose of allocating the risks caused by industry revolution.

5. The juvenility of theory and practice makes us carry further theoretic discussion necessarily.

6. Conclusion ER, PR and ACTH may be the important pathogeny for the occurrence or in pathological process of breast fibroadenoma of juvenility.