Light, pulsed or continuous at a wavelength (e.g. 780 nm), fluoresceces a specimen. The specimens may be combinations of a dye (preferably labelled), an antigen (e.g. rubella) and an antibody reactive with the antigen, with properties of polarizing the light when fluoresced. The light polarized in a...http://www.google.co.uk/patents/US5876672?utm_source=gb-gplus-sharePatent US5876672 - Transient state luminescene assay apparatus
