Score 5 of Johnsen categories is characterized by primary
spermatocytes that will enter meiosis.
A) Testes from males [greater than or equal to] 90 mm SL contained all stages of
spermatocyte development, including spermatozeugmata (10X; Mallory trichrome stain); B) Testes from smaller < 90 mm SL contained all stages of
spermatocyte development, but no spermatozeugmata (20X; hematoxylin and eosin).
6: Synaptonemal complex abnormalities observed with the two fungicides Primary rat
spermatocytes stained with an anti-SCP3 antibody were selected to observe the
spermatocyte nuclei showing synaptonemal complex abnormalities by fluorescence photomicroscopy.
Administration of 100 mg/kg and 200 mg/kg to rats for 20 days significantly increased the number of stem cells and primary
spermatocytes compared to control group [48].
Type A spermatogenetic activity, consisting of sertoli cells and spermatogonia, no
spermatocytes or spermatids, was 23.12%, 1.25%, 8.6%, 61.3%, and 51.88%, respectively.
Spermatocytes failed in their transformation into normal spermatids which appeared disorganized (Fig.
The current European Association of Urology recommendations for the reporting of a testicular biopsy include (1) absence of seminiferous tubules (seminiferous tubule hyalinization), (2) presence of Sertoli cells only (Sertolicell-only syndrome), (3) maturation arrest--incomplete spermatogenesis, not beyond the
spermatocyte stage, and (4) hypospermatogenesis--all cell types up to spermatozoa are present, but there is a distinct decline in the number of reproducing spermatogonia.
An azoospermic man with a double-strand DNA break-processing deficiency in the
spermatocyte nuclei: case report.
Distribution of heterozygous translocations and aneuploid
spermatocyte frequency in domestic sheep.
Differences in diameters of spermatogenic (spermatogonium,
spermatocyte, spermatid, and spermatozoa) and oogenic stages (oogonia, previtellogenic oocyte, vitellogenic oocyte, and postvitellogenic oocyte) between diploids and tetraploids were analyzed by means of analysis of variance (Statistica v.8).
The chromosomes in the pachytene stage of the prophase appear in the nucleus of the primary
spermatocyte near the Sertoli cells (Fig.