Stephanie G Burton1, Don A Cowan2, 3
& John M Woodley41
Department of Chemical Engineering, University of Cape Town, Cape Town, South Africa.
2
Department of Biochemistry and Molecular Biology, University College London, Gower St., London WC1E 6BT, United Kingdom.
3
Current address: Department of Biotechnology, University of the Western Cape, Bellville 7535, Cape Town, South Africa.
4
Department of Biochemical Engineering, University College London, Torrington Place, London WC1E 7JE, United Kingdom.
Correspondence should be addressed to Don A Cowan dcowan@uwc.ac.za