Therapeutic Effect of Stem Cells on Male Infertility in a Rat Model: Histological, Molecular, Biochemical, and Functional Study

Table 1

Evaluation of the right testicular tissue using the Johnson tubular biopsy score (JTBS) for grading the damage [36].

Score 10	Complete spermatogenesis with many spermatozoa
Score 9	Disorganized spermatogenesis with many spermatozoa
Score 8	Disorganized spermatogenesis with few spermatozoa
Score 7	No spermatozoa but many spermatids
Score 6	No spermatozoa and only a few spermatids
Score 5	No spermatozoa or spermatids and many spermatocytes
Score 4	Few spermatocytes
Score 3	Only spermatogonia
Score 2	Only Sertoli cells
Score 1	No cells