What cells make up the majority of a testicle's cells? isn't it the sertoli/sperm cells and tubules?aren't the leydig just a small portion of it?

See below: The germ cells inside the seminiferous tubules (sertoli cells) create sperm. The sperm move into the epididymis where they mature. They are stored there for a few weeks until they eventually move up the vas deferens to combine with fluids from the prostate and seminal vesicles to form what you normally think of as semen. The whole process takes about 7 weeks. The leydig cells distributed throughout the testicle are the body's main source of testosterone. Testosterone, the male sex hormone, is essential to the development of the reproductive organs and other male characteristics such as body and facial hair, low voice, and wide shoulders. Without enough testosterone, a man will probably lose his sex drive and suffer from fatigue, depression, hot flashes and osteoporosis