1. Arrand, J.R., Myers, P.A. and Roberts, R.J., unpublished observations.
2. A new restriction endonuclease from Streptomyces albus G
3. Recognition Sequence of a Restriction Enzyme
4. Bingham, A.H.A., Atkinson, A. and Darbyshire, J., unpublished observations.
5. Bingham, A.H.A. and Darbyshire, J., unpublished observations.