Introduction
Methods of rapid analysis and diagnostics have been investigated intensively in the past.
It seems that the quantitative approach of analyzing biological systems has been especially
successful. One example is the consequent development from PCR to DNA-micro arrays.
Another example are the screening methods used by pharmaceutical companies.
The application of screening methods is not limited to a search for cures of disease.
Screening methods have entered several fields of application and have reentered the
biological sciences on a different scale, like for example Proteomics. However screening
is not limited to the molecular level, it is also useful on the cellular scale.
