1. Comper, W. D. & Laurent, T. C. Physiol. Rev. 58, 255–315 (1978).
2. Preston, B. N., Laurent, T. C. & Comper, W. D. Biochem. Soc. Meet. Colworth, 1979 (in the press).
3. Preston, B. N. & Snowden, J. McK. in Biology ofFibroblast (eds Kulonen, E. & Pikkarainen, J.) 215–230 (Academic, New York, 1973).
4. Laurent, T. C., Björk, I., Pietruszkiewicz, A. & Persson, H. Biochim. biophys. Acta 78, 351–359 (1963).
5. Preston, B. N. & Snowden, J. McK. Proc. R. Soc. A333, 311–313 (1973).