There have been studies on some species within the family Muricidae, because in those species this gland secretes the precursor to the historically important natural dye, Tyrian purple.
Pyramidal lobe of thyroid gland (lobus pyramidalis glandulae thyroideae) | Pyramidal lobe of thyroid gland | Gland of Zeis | Gland | gland | Duvernoy's gland |