Social variables affect phenotype in the neuroma model of neuropathic pain.

Abstract excerpt

When the degree of genetic determination of a trait (i.e. its heritability) is high, one tends to presume that environmental factors will not modify its expression by much. Contrary to this expectation, we show here in rats that a psychosocial-behavioral variable, the identity of cagemates, can largely over-ride genetic predisposition to pain behavior. We used selection-line rats that consistently show high (HA)...

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