http://www.w3.org/ns/prov#value | - The particle (e.g. a cell) is engaged with such ion transport detection structure and ion transport function or properties can be determined. [0253] In one aspect of the present invention, particles, such as cells, can express or over-express an exogenous surface peptide or over-express an endogenous surface protein, such as a cell surface marker not endogenous to the cell.
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