part_of part of part of overlaps expresses expresses tanycyte beta2-tanycyte ME tanycyte A type of tanycyte located in the floor of third ventricle and the infindibular recess. This tanycyte has an elongated morphology with multiple microvilli extending medially and ventrally to the median eminence, contacting the pial surface and blood vessels. This type of tanycyte expresses FGF receptors 1 and 2, is in contact with GnRH neurons, and is involved in the release of gonadotropin-releasing hormone (GnRH). fibroblast growth factor 1 fibroblast growth factor 2 median eminence of neurohypophysis infundibular recess of 3rd ventricle