“…Here, as in research laboratories world wide, work on these devices continues, and much remains to be done (for examples and reviews of recent work on various types of biosensor in Japan and in other countries, see Carr and Bowers., 1980;Wingard, Katzir and Goldstein, 1981;Suzuki, Satoh and Karube, 1982;Karube and Suzuki, 1983;Lowe, Goldfinch and Lias, 1983;Mosbach, Mandenius and Danielsson, 1983;Wingard., 1983;Aston and Turner, 1984;Neujahr, 1984). Because sensors which work wen under laboratory conditions do not always succeed when placed in industrial media, basic research on sensors using not only micro-organisms now available, but also, possibly, new mutants with improved properties, must be backed up by developmental modification and refinement.…”