Objective:To observe distribution and number of T cells in human normal cervical tissue and provide experimental data for further studies like expressions of T cells in cervical lesions and cervical cancer tissues. Methods:The number, distribution and expression intensity of the surface differentiation antigen CD3, CD4, CD8 positive T cells in the normal cervical tissue were detec-ted by immunohistochemical SP technique and computerized imaging analysis system. Results:The CD3 positive cells mainly distribu-ted in the cervical mucosal epithelium and connective tissue above the adjacent lamina propria. The CD8 positive cells widely distribu-ted in the human cervical mucosal lamina propria connective tissue. The CD4 positive cells mainly distributed in the lamina propria connective tissue under the human cervical epithelium and the connective tissue around the cervical mucosa adenoid fossae. The num-ber of CD4 positive cells was higher than that of CD8 positive cells. Conclusions: In the human normal cervical tissue, The CD3, CD4, CD8 positive cells maintain a certain proportions.

Objective To assess salt and cooking oil intake of teachers and students in a college in Beijing,and provide evidence for preventing teachers and students from high salt and oil intake. Methods The number of persons who ate in school canteen every month and the amount of salt and cooking oil usage every month were gotten from school canteen records. The average intake amount of salt and cooking oil of teachers and students were calculated by those records. Results The average intake amount of salt was(10. 41 ± 1. 34) g / day / person,and the amount of cooking oil was(55. 46 ± 7. 21) g/day/person. Conclusion The average intake amounts of salt and cooking oil were above the recommendation of Chinese Nutrition Society. It is suggested that salt and oil usage in usual dietary should be decreased in the canteen.