(19)

(11)

EP 2 185 934 A1

(12)

(43) Date of publication: 19.05.2010 Bulletin 2010/20 (21) Application number: 08788401.1 (22) Date of filing: 21.08.2008

(51) International Patent Classification (IPC):  G01N 33/68(2006.01) (86) International application number: PCT/GB2008/002838 (87) International publication number: WO 2009/024791 (26.02.2009 Gazette 2009/09)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 21.08.2007 GB 0716328 21.08.2007 US 956985 P (71) Applicant: The University Of Bath Bath Bath and North East Somerset BA2 7AY (GB)	(72) Inventors: MACKENZIE, Amanda, Barbara Bath and North East, Somerset BA2 7AY (GB) WATTS, Andrew, Graham Bath and North East, Somerset BA2 7AY (GB) (74) Representative: Kiddle, Simon John  Mewburn Ellis LLP 33 Gutter Lane London EC2V 8AS London EC2V 8AS (GB)