Which of the following cells of human testis are present in the regions outside the seminiferous tubules but in the testicular lobules?

Each seminiferous tubule is lined on its inner side by two types of cells called spermatogonium / make germ cells and Sertoli cells / nurse cells.

Leydig cells or interstitial cells are present in the region outside the seminiferous tubules of testes. These secrete testosterone.