Key Figure 2: Notch signaling molecule expression in the male reproductive tract.
Receptors NOTCH1, 2, and 3 are expressed in the epididymis while NOTCH1 and 2 are the dominant receptors in the vas deferens. In the seminiferous tubules. NOTCH2 and 3 are expressed in spermatocytes while NOTCH1 and 2 are expressed spermatids and mature sperm.