A mixer oscillator stage, which can be used both with a switched 2-band concept and a 3-band concept without changing the architecture of the oscillators which exceeds the number of mixers and by coupling the mixer and oscillators via a switching circuit so as to switch between the different oscillators in dependence upon the part of the band converging the signal. Product information relating to a plurality of products meeting product criteria specified by a group of buyers is presented via the Internet. The cells may further contain DNA encoding receptor proteins which are able to bind to BMPs or enhance or regulate BMP activity. Wave front tilt of radiation that is backscattered from the retina is calculated as a best fit from the set of projections. The mold is opened so that the array is carried by the first half. The drug-micelle conjugate of the present invention has practical application in anticancer therapy.