Thanks to their preferential retention in proliferating tissues, some photosensitizers are therapeutically used such as in photodynamic therapy (PDT).
Isotope enrichments were the result of preferential retention of the heavy isotopes 13C and 15N during assimilation of dietary carbon and nitrogen (DeNiro and Epstein 1978 , 1981.
In each hypothesis, clay accumulated at the boundary of sand and gravel due to preferential retention of water in the sand above the gravel.
Unlike conventional active-targeted nanoparticles, we found that pretargeting resulted in preferential retention of ∼100 nm nanoparticles at the plasma membrane rather than internalization into cells.
This review discusses the fundamental concepts of enhanced permeability and retention (EPR) effect and explores the mechanisms proposed to enhance preferential "retention" in the tumour.
By chance, in a very small proportion of mutated cells the combination of genes affected will be such that it endows them with survival advantage and preferential retention during prolonged passaging.
Therefore, using simple chromatographic theory, the preferential retention of nitrogen "exposed" isomers by the source rock may explain the different distributions of benzocarbazoles (and alkylcarbazoles) in the hydropyrolysates and the Miller oil.
Finally, we found that within MAPK14, preferential retention of intron 2 occurred specifically in 4T07-derived mammary tumors.
Nonetheless, inasmuch as the lower genetic constraint hypothesis applies, the preferential retention of nGPCRs could be effected by a combination of selection forces.
Importantly, our studies satisfy several requirements for demonstrating the preferential retention of genes, rather than an increased gene duplicability, during evolution.
These data thus suggest that the preferential retention of nGPCRs as a group is a result of greater retention of Group I nGPCRs that interact with a nonpeptide ligand.
