1. Abe, S., Steinman, B. U., Wahl, L. M. and Martin, G. R. (1979) High cell density alters the ratio of type III to I collagen synthesis by fibroblasts. Nature, 279, 442–444.
2. Absher, P. M. and Absher, R. G. (1976) Clonal variations and ageing of diploid fibroblasts. Exp. Cell Res., 103, 247–255.
3. Baume, L. J. (1980) The biology of pulp and dentine, in Monographs in Oral Science 8. Karger, Basel.
4. Baume, L. J. and Holz, J. (1981) Long term clinical assessment of direct pulp capping. Int. Dent. J., 31, 251–260.
5. Bradley, K. H., Kawanami, O., Ferrans, V. J. and Crystal, R. G. (1980) The fibroblasts of human lung alveolar structure: a differentiated cell with a major role in lung structure and function. Methods Cell Biol., 21A, 37–64.