Magnetoresistive biochips P. P. Freitas, H. Ferreira, D. Graham, L. Clarke, M. Amaral, V. Martins, L. Fonseca and J. S. Cabral Europhysics News, 34 6 (2003) 224-226 Published online: 01 October 2008 DOI: 10.1051/epn:2003608