Vol. 184, No. 2, February 1998

Review
Mechanisms and prevention of pneumonia in the elderly. K. Sekizawa [PDF]	73
Regular Contributions
Frequency of chromosome 7 gain in human breast cancer cells: Correlation with the number of metastatic lymph nodes and prognosis. K. Hirata, Y. Tagawa, K. Kashima, H. Kidogawa, M. Deguchi, T. Tsuji and H. Ayabe [PDF]	85
Immunohistochemical analysis of matrix proteolytic enzymes in the periprosthetic tissue in the patients with loosening prostheses. R. -S. Yang and T. -K. Liu [PDF]	99
Growth hormone improves mouse embryo development in vitro, and the effect is neutralized by growth hormone receptor antibody. T. Fukaya, T. Yamanaka, Y. Terada, T. Murakami and A. Yajima [PDF]	113
Detection of Mycobacterium tuberculosis in preserved tuberculous lymph nodes by polymerase chain reaction. B. Yang, H. Koga, H. Ohno, K. Ogawa, M. A. Hossain, M. Fukuda, Y. Hirakata, K. Tomono, T. Tashiro and S. Kohno [PDF]	123
Relation between histological intensity of transforming growth factor-b isoforms in human osteosarcoma and the rate of lung metastasis. R. -S. Yang, C. -T. Wu, K. -H. Lin, R. -L. Hong, T.-K. Liu and K.-S. Lin [PDF]	133
Fertilization potential and qualitative characteristics of human spermatozoa after short-term cryostorage at 5°C in two different TEST-yolk buffer preparation. P. M. Zavos, J. R. Correa, C. L. Foster, J. B. Massey and P. N. Zarmakoupis-Zavos [PDF]	143
Effect of rolling bed on decubitus in bedridden nursing home patients. T. Izutsu, T. Matsui, T. Satoh, T. Tsuji and H. Sasaki [PDF]	153

This publication is supported in part by the Grant-in-Aid for Publication of Scientific Research Result from the Japan Society for the Promotion of Science(Grant Number 18HP2007).