J. Rock and B. Hogan, Epithelial Progenitor Cells in Lung Development, Maintenance, Repair, and Disease, Annual Review of Cell and Developmental Biology, vol.27, issue.1, pp.493-512, 2011.
DOI : 10.1146/annurev-cellbio-100109-104040

E. Rawlins and B. Hogan, Epithelial stem cells of the lung: privileged few or opportunities for many?, Development, vol.133, issue.13, pp.2455-2465, 2006.
DOI : 10.1242/dev.02407

J. Rock, S. Randell, and B. Hogan, Airway basal stem cells: a perspective on their roles in epithelial homeostasis and remodeling, Disease Models & Mechanisms, vol.3, issue.9-10, pp.545-556, 2010.
DOI : 10.1242/dmm.006031

S. Kauffman, Cell proliferation in the mammalian lung, Int Rev Exp Pathol, vol.22, pp.131-191, 1980.

J. Rock, M. Onaitis, E. Rawlins, Y. Lu, C. Clark et al., Basal cells as stem cells of the mouse trachea and human airway epithelium, Proceedings of the National Academy of Sciences, vol.106, issue.31, pp.12771-12775, 2009.
DOI : 10.1073/pnas.0906850106

K. Tropea, E. Leder, M. Aslam, A. Lau, D. Raiser et al., Bronchioalveolar stem cells increase after mesenchymal stromal cell treatment in a mouse model of bronchopulmonary dysplasia, American Journal of Physiology - Lung Cellular and Molecular Physiology, vol.302, issue.9, pp.829-837, 2012.
DOI : 10.1152/ajplung.00347.2011

M. Evans, R. Cox, S. Shami, B. Wilson, and C. Plopper, The Role of Basal Cells in Attachment of Columnar Cells to the Basal Lamina of the Trachea, American Journal of Respiratory Cell and Molecular Biology, vol.1, issue.6, pp.463-469, 1989.
DOI : 10.1165/ajrcmb/1.6.463

C. Plopper, A. Mariassy, and L. Lollini, Structure as revealed by airway dissection. A comparison of mammalian lungs, Am Rev Respir Dis, vol.128, pp.4-7, 1983.

C. Plopper, A. Mariassy, D. Wilson, J. Alley, S. Nishio et al., Comparison of Nonciliated Tracheal Epithelial Cells in Six Mammalian Species: Ultrastructure and Population Densities, Experimental Lung Research, vol.31, issue.4, pp.281-294, 1983.
DOI : 10.1007/978-1-4684-4400-1_18

C. Rackley and B. Stripp, Building and maintaining the epithelium of the lung, Journal of Clinical Investigation, vol.122, issue.8, pp.2724-2730, 2012.
DOI : 10.1172/JCI60519

J. Harkema, A. Mariassy, J. George, D. Hyde, and C. Plopper, Epithelial Cells in the Conducting Airways : A Species Comparison. The airway epithelium : Physiology, pathophysiology and pharmacology, 1991.

A. Mariassy and C. Plopper, Tracheobronchial epithelium of the sheep: I. Quantitative light-microscopic study of epithelial cell abundance, and distribution, The Anatomical Record, vol.158, issue.3, pp.263-275, 1983.
DOI : 10.1002/ar.1092050304

R. Irwin, N. Augustyn, C. French, J. Rice, V. Tedeschi et al., Spread the Word About the Journal in 2013, Chest, vol.143, issue.1, pp.1-4, 2013.
DOI : 10.1378/chest.12-2762

A. Winkelmann and T. Noack, The Clara cell: a "Third Reich eponym"?, European Respiratory Journal, vol.36, issue.4, pp.722-727, 2010.
DOI : 10.1183/09031936.00146609

A. Woywodt, S. Lefrak, and E. Matteson, Tainted eponyms in medicine: the "Clara" cell joins the list, European Respiratory Journal, vol.36, issue.4, pp.706-708, 2010.
DOI : 10.1183/09031936.00046110

C. Hsia, Signals and mechanisms of compensatory lung growth, Journal of Applied Physiology, vol.97, issue.5, pp.1992-1998, 2004.
DOI : 10.1152/japplphysiol.00530.2004

C. Wuenschell, M. Sunday, G. Singh, P. Minoo, H. Slavkin et al., Embryonic mouse lung epithelial progenitor cells co-express immunohistochemical markers of diverse mature cell lineages., Journal of Histochemistry & Cytochemistry, vol.44, issue.2, pp.113-123, 1996.
DOI : 10.1177/44.2.8609367

C. Kim, E. Jackson, A. Woolfenden, S. Lawrence, I. Babar et al., Identification of Bronchioalveolar Stem Cells in Normal Lung and Lung Cancer, Cell, vol.121, issue.6, pp.823-835, 2005.
DOI : 10.1016/j.cell.2005.03.032

J. Mcqualter, K. Yuen, B. Williams, and I. Bertoncello, Evidence of an epithelial stem/progenitor cell hierarchy in the adult mouse lung, Proceedings of the National Academy of Sciences, vol.107, issue.4, pp.1414-1419, 2010.
DOI : 10.1073/pnas.0909207107

E. Rawlins, Lung Epithelial Progenitor Cells: Lessons from Development, Proceedings of the American Thoracic Society, vol.5, issue.6, pp.675-681, 2008.
DOI : 10.1513/pats.200801-006AW

R. Nolen-walston, C. Kim, M. Mazan, E. Ingenito, A. Gruntman et al., Cellular kinetics and modeling of bronchioalveolar stem cell response during lung regeneration, AJP: Lung Cellular and Molecular Physiology, vol.294, issue.6, pp.1158-1165, 2008.
DOI : 10.1152/ajplung.00298.2007

F. Archer, E. Jacquier, M. Lyon, J. Chastang, V. Cottin et al., Alveolar Type II Cells Isolated from Pulmonary Adenocarcinoma, American Journal of Respiratory Cell and Molecular Biology, vol.36, issue.5, pp.534-540, 2007.
DOI : 10.1165/rcmb.2006-0285OC

C. Porada, D. Harrison-findik, C. Sanada, V. Valiente, D. Thain et al., Development and characterization of a novel CD34 monoclonal antibody that identifies sheep hematopoietic stem/progenitor cells, Experimental Hematology, vol.36, issue.12, pp.1739-1749, 2008.
DOI : 10.1016/j.exphem.2008.09.003

J. Mcqualter, N. Brouard, B. Williams, B. Baird, S. Sims-lucas et al., Endogenous Fibroblastic Progenitor Cells in the Adult Mouse Lung Are Highly Enriched in the Sca-1 Positive Cell Fraction, Stem Cells, vol.124, issue.3, pp.623-633, 2009.
DOI : 10.1634/stemcells.2008-0866

J. Snyder, R. Teisanu, and B. Stripp, Endogenous lung stem cells and contribution to disease, The Journal of Pathology, vol.94, issue.2, pp.254-264, 2009.
DOI : 10.1002/path.2473

H. Martineau, C. Cousens, S. Imlach, M. Dagleish, and D. Griffiths, Jaagsiekte Sheep Retrovirus Infects Multiple Cell Types in the Ovine Lung, Journal of Virology, vol.85, issue.7, pp.3341-3355, 2011.
DOI : 10.1128/JVI.02481-10

C. Murgia, M. Caporale, O. Ceesay, D. Francesco, G. Ferri et al., Lung Adenocarcinoma Originates from Retrovirus Infection of Proliferating Type 2 Pneumocytes during Pulmonary Post-Natal Development or Tissue Repair, PLoS Pathogens, vol.36, issue.3, p.1002014, 2011.
DOI : 10.1371/journal.ppat.1002014.s001

J. Platt, N. Kraipowich, F. Villafane, and J. Demartini, Alveolar Type II Cells Expressing Jaagsiekte Sheep Retrovirus Capsid Protein and Surfactant Proteins Are the Predominant Neoplastic Cell Type in Ovine Pulmonary Adenocarcinoma, Veterinary Pathology, vol.66, issue.3, pp.341-352, 2002.
DOI : 10.1007/BF01310861

H. Martineau, M. Dagleish, C. Cousens, C. Underwood, V. Forbes et al., Cellular Differentiation and Proliferation in the Ovine Lung during Gestation and Early Postnatal Development, Journal of Comparative Pathology, vol.149, issue.2-3, pp.149-151
DOI : 10.1016/j.jcpa.2012.11.239

J. Kajstura, M. Rota, S. Hall, T. Hosoda, D. Amario et al., Evidence for Human Lung Stem Cells, New England Journal of Medicine, vol.364, issue.19, pp.1795-1806, 2011.
DOI : 10.1056/NEJMoa1101324

A. Bracken and K. Helin, Polycomb group proteins: navigators of lineage pathways led astray in cancer, Nature Reviews Cancer, vol.57, issue.11, pp.773-784, 2009.
DOI : 10.1038/nrc2736

M. Kimura, H. Takenobu, N. Akita, A. Nakazawa, H. Ochiai et al., Bmi1 regulates cell fate via tumor suppressor WWOX repression in small-cell lung cancer cells, Cancer Science, vol.5, issue.5, pp.983-990, 2011.
DOI : 10.1111/j.1349-7006.2011.01891.x

X. Liu, R. Driskell, and J. Engelhardt, Stem Cells in the Lung, Meth Enzymol, vol.419, pp.285-321, 2006.
DOI : 10.1016/S0076-6879(06)19012-6

E. Grinstein and C. Mahotka, Stem cell divisions controlled by the proto-oncogene BMI-1

J. Dovey, S. Zacharek, C. Kim, and J. Lees, Bmi1 is critical for lung tumorigenesis and bronchioalveolar stem cell expansion, Proceedings of the National Academy of Sciences, vol.105, issue.33, pp.11857-11862, 2008.
DOI : 10.1073/pnas.0803574105

F. Cavaleri and H. Scholer, Nanog, Cell, vol.113, issue.5, pp.551-552, 2003.
DOI : 10.1016/S0092-8674(03)00394-5

I. Chambers, D. Colby, M. Robertson, J. Nichols, S. Lee et al., Functional Expression Cloning of Nanog, a Pluripotency Sustaining Factor in Embryonic Stem Cells, Cell, vol.113, issue.5, pp.643-655, 2003.
DOI : 10.1016/S0092-8674(03)00392-1

Y. Li, H. Zhao, F. Lan, A. Lee, L. Chen et al., Generation of Human-Induced Pluripotent Stem Cells from Gut Mesentery-Derived Cells by Ectopic Expression of OCT4/SOX2/NANOG, Cellular Reprogramming (Formerly "Cloning and Stem Cells"), vol.12, issue.3, pp.237-247, 2010.
DOI : 10.1089/cell.2009.0103

K. Okita, T. Ichisaka, and S. Yamanaka, Generation of germline-competent induced pluripotent stem cells, Nature, vol.62, issue.7151, pp.313-317, 2007.
DOI : 10.1038/nature05934

I. Park, R. Zhao, J. West, A. Yabuuchi, H. Huo et al., Reprogramming of human somatic cells to pluripotency with defined factors, Nature, vol.18, issue.7175, pp.141-146, 2008.
DOI : 10.1038/nature06534

H. Sumer, J. Liu, L. Malaver-ortega, M. Lim, K. Khodadadi et al., NANOG is a key factor for induction of pluripotency in bovine adult fibroblasts, Journal of Animal Science, vol.89, issue.9, pp.2708-2716, 2011.
DOI : 10.2527/jas.2010-3666

J. Yu, M. Vodyanik, K. Smuga-otto, J. Antosiewicz-bourget, J. Frane et al., Induced Pluripotent Stem Cell Lines Derived from Human Somatic Cells, Science, vol.318, issue.5858, pp.1917-1920, 2007.
DOI : 10.1126/science.1151526

Y. Li, M. Cang, A. Lee, K. Zhang, and D. Liu, Reprogramming of Sheep Fibroblasts into Pluripotency under a Drug-Inducible Expression of Mouse-Derived Defined Factors, PLoS ONE, vol.86, issue.1, p.15947, 2011.
DOI : 10.1371/journal.pone.0015947.s002

H. Niwa, J. Miyazaki, and A. Smith, Quantitative expression of Oct-3/4 defines differentiation, dedifferentiation or self-renewal of ES cells, Nature Genetics, vol.24, issue.4, pp.372-376, 2000.
DOI : 10.1038/74199

S. Chiou, M. Wang, Y. Chou, C. Chen, C. Hong et al., Coexpression of Oct4 and Nanog Enhances Malignancy in Lung Adenocarcinoma by Inducing Cancer Stem Cell-Like Properties and Epithelial-Mesenchymal Transdifferentiation, Cancer Research, vol.70, issue.24, pp.10433-10444, 2010.
DOI : 10.1158/0008-5472.CAN-10-2638

T. Ling, M. Kuo, C. Li, A. Yu, Y. Huang et al., Identification of pulmonary Oct-4+ stem/progenitor cells and demonstration of their susceptibility to SARS coronavirus (SARS-CoV) infection in vitro, Proceedings of the National Academy of Sciences, vol.103, issue.25, pp.9530-9535, 2006.
DOI : 10.1073/pnas.0510232103

G. Pan and J. Thomson, Nanog and transcriptional networks in embryonic stem cell pluripotency, Cell Research, vol.9, issue.1, pp.42-49, 2007.
DOI : 10.1016/j.cell.2006.07.024

Y. Miyanari and M. Torres-padilla, Control of ground-state pluripotency by allelic regulation of Nanog, Nature, vol.5, issue.7390, pp.470-473, 2012.
DOI : 10.1038/nature10807