![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Testis proper: endocrine portion
Leydig (interstitial) cells constitute the endocrine portion of the testis. They produce the steroid hormone, testosterone. Steroid-secreting cells commonly have vacuoles in their cytoplasm, resulting from extraction of the lipid precursor molecules used in steroid synthesis. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 1000x
![Leydig (interstitial) cells <p>Leydig (interstitial) cells constitute the endocrine portion of the testis. They produce the steroid hormone, testosterone. Steroid-secreting cells commonly have vacuoles in their cytoplasm, resulting from extraction of the lipid precursor molecules used in steroid synthesis. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-03C-1-ping.png)
Leydig (interstitial) cells
Leydig (interstitial) cells constitute the endocrine portion of the testis. They produce the steroid hormone, testosterone. Steroid-secreting cells commonly have vacuoles in their cytoplasm, resulting from extraction of the lipid precursor molecules used in steroid synthesis. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 1000x
![Lipid vacuoles <p>Leydig (interstitial) cells constitute the endocrine portion of the testis. They produce the steroid hormone, testosterone. Steroid-secreting cells commonly have vacuoles in their cytoplasm, resulting from extraction of the lipid precursor molecules used in steroid synthesis. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-03C-2-ping.png)
Lipid vacuoles
Leydig (interstitial) cells constitute the endocrine portion of the testis. They produce the steroid hormone, testosterone. Steroid-secreting cells commonly have vacuoles in their cytoplasm, resulting from extraction of the lipid precursor molecules used in steroid synthesis. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 1000x
![Blood vessels <p>Leydig (interstitial) cells constitute the endocrine portion of the testis. They produce the steroid hormone, testosterone. Steroid-secreting cells commonly have vacuoles in their cytoplasm, resulting from extraction of the lipid precursor molecules used in steroid synthesis. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 1000x</p>](https://digitalhistology.org/wp-content/uploads/2023/11/O.R.M.T.TP-03C-3-ping.png)
Blood vessels
Leydig (interstitial) cells constitute the endocrine portion of the testis. They produce the steroid hormone, testosterone. Steroid-secreting cells commonly have vacuoles in their cytoplasm, resulting from extraction of the lipid precursor molecules used in steroid synthesis. Blood vessels and lymphatics are abundant in the interstitium surrounding these cells. 1000x
![Image source > <p>Image taken of a slide from the University of New England College of Osteopathic Medicine slide collection.</p>](https://digitalhistology.org/wp-content/uploads/2023/11/UNE-ping-plural-2.png)
Image source >
Image taken of a slide from the University of New England College of Osteopathic Medicine slide collection.