Method and device for the selective withdrawal of components from complex mixtures
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United States of America Patent
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Feb 1, 2005
Grant Date -
Jun 20, 2002
app pub date -
Mar 19, 1997
filing date -
Jun 17, 1994
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Abstract
The method according to the invention permits a selected withdrawal of one or a few molecularly disperse or cellular components of a system, such as molecules, molecular complexes, vesicles, micelles, cells, optionally together with an associated volume element V having a size of 10.sup.-9 l.gtoreq.V.gtoreq.10.sup.-18 l from a larger sample volume. The selected transfer of the sought component to another environment is effected by defining the space and time of withdrawal by means of a signal correlating with the small component to be withdrawn. The method is particularly useful for the withdrawal of non-abundant components the existence of which can be detected in a preceding step by a scanning process. The method is also useful for the withdrawal of per se unidentified components.
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