Negative Selection

The separation of specific cells or cell populations from a heterogeneous mixture. Specifically it refers to the selective removal of a population of undesired cells through recognition and elimination of cells bearing the specified characteristics. (NCI Thesaurus)

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Negative Reinforcer

A stimulus that increases the frequency of a behavior that prevents or terminates its presentation. Noxious stimuli, such as shock in laboratory…

Negative Regulation of Serotonin Release

Any process which reduces the steady-state level or inhibits the release of the monoamine neurotransmitter serotonin, resulting in diminished or abbreviated…

Negative Regulation of S Phase

S Phase Arrest consists of interference with, or restraint of, activities that regulate the cellular capacity to transit the cell cycle stage…

Negative Regulation of Receptor Activation

Any intercellular signaling process that reduces the frequency or extent of binding of a cognate ligand to an intracellular or transmembrane receptor…

Negative Regulation of Platelet Aggregation Process

Any platelet aggregation process that decreases the rate, frequency or extent of platelet aggregation.

Negative Regulation of Platelet Activating Factor Signaling

Any physiologic process which occurs in response to ligation of the platelet activating factor receptor, and results in a reduced number of…