The image above shows sensory nerves containg CGRP (red) on the surface of a blood vessel. A recent paper by Bakar et al. (2017) Cardiovascular Research, provides further evidence of the role of sensory nerves in perivascular fat (PVAT) Bakar HA, Dunn WR, Daly CJ & Ralevic V (2017). Sensory innervation of perivascular adipose tissue: a crucial role in artery vasodilatation and leptin release . Cardiovascular Research, Vol 113, Issue 8, 962-972