For example in the suprapedal gland of the land snail Pomatias elegans there are three types of gland cells: cells producing mucoproteins, cells producing proteins and cells producing sulphated mucopolysaccharides.
Pyramidal lobe of thyroid gland (lobus pyramidalis glandulae thyroideae) | Pyramidal lobe of thyroid gland | Gland of Zeis | Gland | gland | Duvernoy's gland |