active transport

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active transport

[′ak·tiv ′tranz‚pȯrt]
(physiology)
The pumping of ions or other substances across a cell membrane against an osmotic gradient, that is, from a lower to a higher concentration.
References in periodicals archive ?
Greater uptake by Pima cultivars at low [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] concentrations could be a result of either more active uptake sites or additional uptake sites.
The very specific binding of 131I-TM601 to tumor tissue and its active uptake into cancer cells means that we are able to deliver a very targeted, concentrated dose of radiation to tumors," said Dr.
A full Life Cycle evaluation of cost and environmental benefits will be disseminated via EU ETV forums to ensure active uptake of the technology offering by comparing it to traditional UV technology in terms of energy, infrastructure and lifetime costs.