
Testis
Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Spermatogonia in interphase
Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Primary spermatocytes in prophase
Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Primary spermatocytes in metaphase
Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Spermatids
Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Sertoli cells
Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Tunica propria
Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x

Leydig cells
Primary spermatocytes, the largest cells in the spermatogenic lineage, form from mitotic division of spermatogonia in the basal compartment. Primaries migrate through the blood-testis barrier and enter a prolonged period of prophase of meiosis I. Primary spermatocytes complete meiosis I, the reductional phase, to produce haploid secondary spermatocytes. 1000x