The identification of seminiferous tubule tissue and leydig cells from rat testes through histopathology anatomy (HPA) method with hematoxylin eosin (HE) staining on some treatments. Yellow arrow () = normal leydig cells, red arrow () = nekrosis leydig cells, green arrow () = spermatogonia cells, blue arrow () = spermatocyte primary-secondary, black arrow () = normal spermatid cells, orange arrow () = nekrosis spermatid cells, purple arrow () = sertoli cells.