On-chip TB screening using SPR. SPR image of the microarrayed chip (left) and the configuration of the SPR array chip (right). Numbers shown in the experiment set indicate the molecular weight of each purified MTB antigen. Positive control means the mixture of MTB antigens used for antibody challenge from rabbits. The BSA was used as the negative control.
Hsieh et al. Nanoscale Research Letters 2012 7:180 doi:10.1186/1556-276X-7-180