Sertoli cells are found in
a)	Heart	b)	Liver
c)	Germinal epithelium	d)	Seminiferous tubules

(d)

Each lobule of testis contains two to three seminiferous tubules, blood vessels, nerves and connective tissue. Wall of each seminiferous tubule is formed of a single layered germinal epithelium. Majority of cells in this epithelium are cubical, however at certain places, there are present large pyramidal Sertoli or nurse cells. Sertoli cells nourish the developing sperms.