Definitions for "Negative selection"
(see purifying selection)
Selection of individuals that do not possess a certain character. A method by which growing cells that do not carry a DNA insert integrated at a specific chromosomal location are selected. See positive selection.
A selection process where the graders remove the "out of specification" materials. In other words the removal of downgrade and cull materials. See positive selection.
Keywords:  leck, suh, tiv, gah, neh
(NEH-gah-tiv suh-LECK-shun) Immune system process by which immature self-reactive lymphocytes are eliminated, thereby contributing to the maintenance of self-tolerance