1. (1) Alberts, B., Johnson, A., Lewis, J., Raff, M., Roberts, K. and Walter, P., Molecular biology of the cell, 4th ed., Garland Science, New York (2002), pp. 583-1027.
2. (2) Mow, V. C., Guilak, F., Tran-Son-Tay, R. and Hochmuth, R. H., (eds) Cell mechanics and cellular engineering, Springer, Berlin Heidelberg New York (1994).
3. (3) Atala, A. and Lanza, R. P., Methods of tissue engineering, Academic Press (2002).
4. (4) Omata, S., Development of micro tactile sensor for detecting stiffness of cell using piezoelectric element and applications, Technical digest of the 14th sensor symposium (1996), pp. 203-206.
5. (5) Kosawada, T. and Kuni-i, K., A novel method of sensing for “Softness” by using dynamic response of piezoelectric vibrator, Proceedings of the international conference on new frontiers in biomechanical engineering, Tokyo (1997), pp. 429-432.