Objective:To investigate the expression of annexin 5 in rat testis after removing submandibular gland in rats. Methods:On day 14,28 and 42 after the operation,the changes of annexin 5 expression in rat testis were analyzed by Western blot and Immunohistochemistry.Results:Western blot showed that there was a 27.5% and a 35.2% significant increase(P

Objective:To establish a standard colorectal neoplasm tissue biobank with complete clinical information to provide high quality samples for fundamental and clinical research of colorectal neoplasm.Methods:Based on Affiliated Jinhua Hospital, Zhejiang University School of Medicine, to conduct structural design of colorectal neoplasm tissues, normal tissues and related information. Establish standard operating procedures from the collection and storage of tissue samples, standardize the entry of basic information, medical history, pathology and other relevant clinical information of the patients, and conduct random quality inspections on the pathological morphology and molecular level on a regular basis.Results:A tissue biobank of colorectal neoplasm was successfully constructed. During the establishment and improvement of this tissue biobank, standardized quality control was implemented during the whole-process including sample collection, warehousing, storage and delivery. According to the random sampling quality inspection, the RNA preservation effect was good, the rates of neoplasms in cancer tissue was >80%, and the clinical data of samples were complete.Conclusions:The preliminary construction of colorectal neoplasm tissue biobank not only improves the utilization value of tissue samples, but also provides a guarantee for realizing the bidirectional transformation of fundamental research and clinical application.