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1. Thus, whereas spermatocytes produce four functional haploid spermatozoa, primary oocytes eventually produce one functional haploid egg plus two polar bodies.

2. This latter cell is called the primary spermatocyte.

3. In the secondary maturation cell division the secondary spermatocyte generated spermatid containing 32 nuclei with round, spindle and crescent shapes, which eventually developed into 32 spermatozoon.

4. At the stage of secondary spermatocyte, electron densed proacrosomal granules were found in the cell.

5. With the development of the spermatocyte the electron density in the chromatin showed a steady increase.

6. The testis at spermatocyte phase develops, and is translucent, and the spermatogenetic cells in seminiferous tubule are primarily composed of primary spermatocytes and secondary spermatocytes.

7. In the secondary spermatocyte emerges a cavity which is formed by the aggregation of endoplasmic reticulum vesicles.

8. Methods Mouse testis primary spermatocyte chromosome aberration assay(sentencedict.com), sperm morphologic analyses and teratogenic test.

9. Primary spermatocyte was derived from spermatogonium of light staining type and produced spermatozoon. Through two successively mature cell divisions.

10. The spermatocyte is of polygonal shape, which contains a centriole appendage formed by the chromatoid body's surrounding the centriole.

11. It was shown that polyvalent of primary spermatocyte appeared only after 10 days of 147Pm contamination.

12. In male, the immunopositive reaction in spermatogonia, spermatocyte and spermatid to testosterone antibodies strengthened gradually during the development and maturation of testis.

13. The prophase of primary spermatocyte would appear synaptonemal complex, which should been the symbol that the homologous chromosome carried through the change of homologous gene.

14. The electron microscopic technique was adopted to study spermatocyte and spermatozoid ultra-structures of Dryopteris crassirhizoma Nakai.

15. One secondary spermatocyte divides and eventually grows into two sperm cells.

16. Conclusion Testosterone propionate plays a positive role in meiosis and maturation of spermatocyte in mice.

16. Sentencedict.com try its best to gather and make good sentences.

17. The results indicates that the spermatogenic process was like other teleosts, both included following stages spermatogonium , primary spermatocyte, secondary spermatocyte, spermatid and spermatozoon.

18. Conclusion : Cigarette end immersion increases the frequencies of micronucleus in bone marrow PCE and induces numeral aberration of chromosomes in primary spermatocyte .

19. To hint 11-sour testosterone main to interfere with normal differentiation development of first spermatocyte, apoptosis second spermatocyte and nematoblast.

20. Objective: To determine the effect of methylbenzene on meiosis of spermatocyte from mouse testis.

21. Objective:To estimate the number of spermatids generated by one primary spermatocyte and thus evaluate the efficiency of meiosis during spermatogenesis in normal adult men.

22. During spermatogenesis two pairs of basal body-axoneme complexes originated from centrioles are found in the spermatocyte and they are separated completely from each other at interkinesis.

23. The normal expression of proto-oncogenes plays an important role in the regulation of spermatogonial mitosis , spermatocyte meiosis as well as spermiogenesis and sperm maturation.