gatekeeper effect

gatekeeper effect

a contraction of the endothelium mediated by immunoglobulin G. It permits components of the blood to gain access to the extravascular space as a result of the increased vascular permeability.
References in periodicals archive ?
The gatekeeper effect remains similar when the sample is limited to individuals that report having a usual source of care (p<.
Given the paucity of research in this area, our results are suggestive enough of a gatekeeper effect to warrant attention.