Sustentacular cell
A sustentacular cell is a type of cell primarily associated with structural support.

One type of sustentacular cell is the Sertoli cell
Sertoli cell
A Sertoli cell is a 'nurse' cell of the testes that is part of a seminiferous tubule.It is activated by follicle-stimulating hormone and has FSH-receptor on its membranes.-Functions:...

, in the testicle
The testicle is the male gonad in animals. Like the ovaries to which they are homologous, testes are components of both the reproductive system and the endocrine system...

. It is located in the walls of the seminiferous tubules and supplies nutrients to sperm.

Another type of sustentacular cell is found in the Olfactory epithelium
Olfactory epithelium
The olfactory epithelium is a specialized epithelial tissue inside the nasal cavity that is involved in smell. In humans, it measures about 1 square centimetre and lies on the roof of the nasal cavity about 7 cm above and behind the nostrils...

.The Internal Ear (Organ of Corti) and the taste buds also contain the sustentacular cell.

About 40% of carcinoids have a scattering of sustentacular cells, which stain positive for S-100.
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