**Author details**

#### DMAB Dissanayake

Address all correspondence to: anuradissa@kln.ac.lk

Department of Obstetrics and Gynaecology, Faculty of Medicine Ragama, University of Kelaniya, Sri Lanka

[4] Gohbara A, Katagiri K, Sato T, Kubota Y, Kagechika H, Araki Y, Araki Y, Ogawa T. *In vitro* murine spermatogenesis in an organ culture system. Biology of Reproduction. 2010;**83**:

*In Vitro* Spermatogenesis; Past, Present, and Future http://dx.doi.org/10.5772/intechopen.73505 43

[5] Ketkar AA, Reddy KVR. Expression pattern of OCT-4 and PLZF transcription factors during the early events of spermatogenesis in mice. Journal of Cell Science and Therapy.

[6] Caires K, Broady J, McLean D. Maintaining the male germline: Regulation of spermato-

[7] Huckins C. The spermatogonial stem cell population in adult rats. Cell and Tissue

[8] Moens PB, Hugenholtz AD. The arrangement of germ cells in the rat seminiferous tubule:

[9] Phillips BT, Gassei K, Orwig KE. Spermatogonial stem cell regulation and spermatogen-

[10] Hermann BP, Phillips BT, Orwig KE. The elusive spermatogonial stem cell marker? Bio-

[11] Ehmcke J, Wistuba J, Schlatt S. Spermatogonial stem cells: Questions, models and per-

[12] Chan F, Oatley MJ, Kaucher AV, Yang QE, Bieberich CJ, Shashikant CH, Oatley JM. Functional and molecular features of the Id4+ germline stem cell population in mouse

[13] Wu Z, Falciatori I, Molyneux LA, Richardson TE, Chapman KM, Hamra FK. Spermatogonial culture medium: An effective and efficient nutrient mixture for culturing rat

[14] Nayernia K, Adham I, Kremllng H, Reim K, Schlicker M, Schluter G, Engel W. Stage and developmental specific gene expression during mammalian spermatogenesis. The

[15] Dadoune JP, Siffroi JP, Alfonsi MF.Transcription in haploid male germ cells. International

[16] Egger GF, Witter K. Peritubular contractile cells in testis and epididymis of the dog,

[17] Hu J, Chenb YX, Wanga D, Qia X, Lia TG, Haoa J, Mishinac Y, Garbersa DL, Zhaoa GQ. Developmental expression and function of Bmp4 in spermatogenesis and in maintaining

[18] Whelly S, Johnson S, Powell J, Borchardt C, Hastert MC, Cornwall GA. Nonpathological extracellular amyloid is present during normal epididymal sperm maturation. PLoS

[19] Cooper HW, Bausek N. Evolution and spermatogenesis. Philosophical Transactions of

An electron microscope study. Journal of Cell Science. 1975;**19**:487-507

esis. Philosophical Transactions of the Royal Society. 2010;**365**:1663-1678

gonial stem cells. Journal of Endocrinology. 2010;**205**:133-145

spectives. Human Reproduction Update. 2006;**12**:275-282

spermatogonial stem cells. Biology of Reproduction. 2009;**81**:77-86

International Journal of Developmental Biology. 1996;**40**:379-383

*Canis lupus familiaris*. Acta Veterinaria Brono. 2009;**78**:3-11

epididymal integrity. Developmental Biology. 2004;**276**:158-171

testes. Genes & Development. 2014;**28**:1351-1362

261-267

2012;**3**. DOI: 10.4172/2157-7013.1000120

logy of Reproduction. 2011;**85**:221-223

Review of Cytology. 2004;**237**:1-56

the Royal Society B. 2010;**365**:1465-1480

One. 2012;**7**:1371-1378

Kinetics. 1971;**4**:313-334
