1. Identification of Pseudomwonas pyocyanea by the oxidase reaction;Kovacs, N.;Nature (Lond.),1956
2. Lapage, S. P., Bascomb, S., Willcox, W. R., and Curtis, M. A. (1970). Computer identification of bacteria. In Automation, Mechanization and Data Handling in Microbiology, edited by A. Baillie and R. J. Gilbert, pp. 1-22. Society for Applied Bacteriology Technical Series no. 4. Academic Press, London.
3. From the Department of Bacteriology and Immunology( Western Infirmary), University of Glasgow Immunodeficiency syndromes with hypogammaglobulinaemia are rare;FERGUSON, A.N.N.E.,1971
4. The screening technique, as described here, has been modelled on the Guthrie test for phenylketonuria screening,1971
5. Printed filter paper which is used for collection and transport of dried blood spots filter paper 903 is used for the sample papers; sheets of filter paper were printed by the University of Glasgow printing department. Blood is obtained by Received for publication 12;Fig,1972