Positive Selection

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

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Positive Reinforcer

A stimulus that increases the frequency of behavior that leads to its presentation. Things such as food, water, sex, and the opportunity…

Positive Regulation of Serotonin Release

Any process in which the monoamine neurotransmitter serotonin is released or retained in the synaptic cleft, resulting in induced or sustained…

Positive Regulation of Platelet Aggregation Process

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

Positive Regulation of Oxidative Stress Process

Oxidative Stress Induction involves initiation of activities that induce a disturbance in the pro-oxidant/antioxidant balance, leading to disruption of cell function by…

Positive Regulation of Nitric Oxide Release

Any process in which release of the gaseous signaling molecule nitric oxide is increased. Primarily in phagocytes, nitric oxide production is induced…

Positive Regulation of Necrotic Process

Any process that increases the frequency, rate or extent of necrosis.