1. Albamonte MI, Albamonte MS, Stella I, Zuccardi L, Vitullo AD. The infant and pubertal human ovary: balbiani's body-associated VASA expression, immunohistochemical detection of apoptosis related BCL2 and BAX proteins, and DNA fragmentation. Hum Reprod 2013; 28: 698-706.
2. Al-Mufti W, Bomsel-Helmreich O, Christides JP. Oocyte size and intrafollicular position in polyovular follicles in rabbits. J Reprod Fertil 1988; 82: 15-25.
3. Arends MJ, Morris RG, Wyllie AH. Apoptosis. The role of the endonuclease. Am J Pathol 1990; 136: 593–608.
4. Aoyama M, Shiraishi A, Matsubara S, Horie K, Osugi T, Kawada T, Yasuda K, Satake H. Identification of a new theca/interstitial cell-specific gene and its biological role in growth of mouse ovarian follicles at the gonadotropin-independent stage. Front Endocrinol 2019; 10: 553.
5. Balciuniene J, Bardwell VJ, Zarkower D. Mice mutant in the DM domain gene Dmrt4 are viable and fertile but have polyovular follicles. Mol Cell Biol 2006; 26: 8984-8991.
6. Blanco JC, Boukhvalova MS, Perez DR, Vogel SN, Kajon A. Modeling human respiratory viral infections in the cotton rat (Sigmodon hispidus). J Antivir Antiretrovir 2014; 6: 40–42.
7. Byskov AG, Lintern-Moore S. Follicle formation in the immature mouse ovary: the role of the rete ovarii. J Anat 1973; 116: 207-217.
8. Christensen AP, Peyrache E, Kaune H, Williams SA. Formation of multiple-oocyte follicles in culture. In Vitro Cell Dev Biol Anim 2017; 53: 791-797.
9. Chuluunbaatar T, Ichii O, Nakamura T, Irie T, Namba T, Islam MR, Otani Y, Masum MA, Okamatsu-Ogura Y, Elewa YHA, Kon Y. Unique running pattern and mucosal morphology found in the colon of cotton rats. Front Physiol 2020; 11: 587214.
10. Dandekar PV, Martin MC, Robert HG. Polyovular follicles associated with human in vitro fertilization. Fertil Steril 1988; 49: 483-486.
11. Davis DE, Hall O. Polyovular and anovular follicles in the wild Norway rat. Anat Rec 1950; 107: 187-192.
12. Donne R, Saroul-Aïnama M, Cordier P, Celton-Morizur S, Desdoutes C. Polyploidy in liver development, homeostasis and disease. Nat Rev Gastroenterol Hepatol 2020; 17: 391–405.
13. Edwards RG, Beard HK. Oocyte polarity and cell determination in early mammalian embryos. Mol Hum Reprod 1997; 3: 863–905.
14. Faith RE, Montgomery CA, Durfee WJ, Aguilar-Cordova E, Wyde PR. The cotton rat in biomedical research. Lab Anim Sci 1997; 47: 337-345.
15. Fulton N, Martins da Silva SJ, Bayne RAL, Anderson RA. Germ cell proliferation and apoptosis in the developing human ovary. J Clin Endocrinol Metab 2005; 90: 4664–4670.
16. Francis W, Brambell R.The development and morphology of the gonads of the mouse. Part III-The growth of the follicles. Royal Socie 1997; 103: 268-272.
17. Gaytán F, Morales C, Lozano MM, Sempere MT. Generation of multi-oocyte follicles in the peripubertal rat ovary: link to the invasive capacity of granulosa cells? Fertil Steril 2014; 101: 1467-1478.
18. Gondos B, Bhiraleus P, Hobel CJ. Ultrastructural observations on germ cells in human fetal ovaries. Am J Obstet Gynecol 1971; 110: 644–652.
19. Greenwald GS, Moor RM. Isolation and preliminary characterization of pig primordial follicles. J Reprod Fertil 1989; 87: 561-571.
20. Hadek R. Morphological and histochemical study in the ovary of the sheep. Am J Vet Res 1958; 19: 873-881.
21. Hartman CG. Polynuclear ova and polyovular follicles in the opossum and other mammals with special reference to the problem of fecundity. Am J Anat 1926; 37: 1-51.
22. Hirshfield AN. Development of follicles in the mammalian ovary. Int Rev Cytol 1991; 124: 43–101.
23. Hirshfield AN. Heterogeneity of cell populations that contribute to the formation of primordial follicles in rats. Biol Reprod 1992; 47: 466–472.
24. Ichii O, Nakamura T, Irie T, Kouguchi H, Nakamura D, Nakamura S, Sato S, Yokoyama K, Horino T, Sunden Y, Elewa YH, Kon Y. Female cotton rats (Sigmodon hispidus) develop chronic anemia with renal inflammation and cystic changes. Histochem Cell Biol 2016; 146: 351–362.
25. Ichii O, Nakamura T, Irie T, Kouguchi H, Sotozaki K, Horino T, Sunden Y, Elewa YHA, Kon Y. Close pathological correlations between chronic kidney disease and reproductive organ-associated abnormalities in female cotton rats. Exp Bio Med 2018; 243: 418-427.
26. Ireland JLH, Scheetz D, Jimenez KF, Themmen APN, Ward F, Lonergan P, Smith GW, Perez GI, Evans ACO, Ireland JJ. Antral follicle count reliably predicts number of morphologically healthy oocytes and follicles in ovaries of young adult cattle. Biol Reprod 2008; 79: 1219-1225.
27. Jaglarz MK, Nowak Z, Bilinski SM. The Balbiani body and generation of early asymmetry in the oocyte of a tiger beetle. Differentiation 2003; 71: 142–151.
28. Jefferson WN, Couse JF, Padilla-Banks E, Korach KS, Newbold RR. Neonatal exposure to genistein induces estrogen receptor (ER) alpha expression and multioocyte follicles in the maturing mouse ovary: evidence for ER beta-mediated and nonestrogenic actions. Biol Reprod 2002; 67: 1285-1296.
29. Kennedy WP. The occurrence of polyovular graafian follicles. J Anat 1924; 58: 328-334
30. Kloc M, Bilinski S, Dougherty MT, Brey EM, Etkin LD. Formation, architecture, and polarity of female germline cyst in Xenopus. Dev Biol 2004; 266: 43-61.
31. Kon Y, Konno A, Hashimoto Y, Endoh D. Ovarian cysts in MRL/MpJ mice originate from rete ovarii. Anat Histol Embryol 2007; 36: 172-178.
32. Lena AM, Rossi V, Osterburg S, Smirnov A, Osterburg C, Tuppi M, Cappello A, Amelio I, Dötsch V, De Felici M, Klinger FG. The p63 C-terminus is essential for murine oocyte integrity. Nat Commun 2021; 12: 1-4.
33. Lucci CM, Amorim CA, Rodrigues APR, Figueiredo JR, Báo SN, Silva JRV, Gonçalves PBD. Study of preantral follicle population in situ and after mechanical isolation from caprine ovaries at different reproductive stages. Anim Reprod Sci 1999; 56: 223-236.
34. Macgregor HC, Kezer J. Gene amplification in oocytes with 8 germinal vesicles from the tailed frog Ascaphus truei Stejneger. Chromosoma 1970; 29: 189-206.
35. Maheshwari A, Fowler PA. Primordial follicular assembly in humans - revisited. Zygote 2008; 16: 285–296.
36. Malgorzata K, Mariusz J, Matthew D, David MS, Liesl NT, Szczepan B. Mouse early oocytes are transiently polar: three-dimensional and ultrastructural analysis. Exp Cell Res 2008; 314: 3245-3254.
37. Marlow FL, Mullins MC. Bucky ball functions in Balbiani body assembly and animal-vegetal polarity in the oocyte and follicle cell layer in zebrafish. Dev Biol 2008; 321: 40–50.
38. Martin NC, McCullough CT, Bush PG, Sharp L, Hall AC, Harrison DJ. Functional analysis of mouse hepatocytes differing in DNA content: volume, receptor expression, and effect of IFN? J Cell Physiol 2002; 191: 138–144.
39. Matzuk MM, Burns KH, Viveiros MM, Eppig JJ. Intercellular communication in the mammalian ovary: oocytes carry the conversation. Science 2002; 296: 2178–2180.
40. McDougall K, Hay MA, Goodrowe KL, Gartley CJ, King WA. Changes in the number of follicles and of oocytes in ovaries of prepubertal, peripubertal and mature bitches. J Reprod Fertil 1997; 51: 25-31.
41. Miyabayashi k, Tokunaga K, Otake H, Baba T, Shima Y, Morohashi K. Heterogeneity of ovarian theca and interstitial gland cells in mice. PloS One 2015; 10: e0128352.
42. Monniaux D. Factors influencing establishment of the ovarian reserve and their effects on fertility. International Ruminant Reproduction Symposium (IRRS) 2018; 15.
43. Monniaux D, Clément F, Dalbies-Tran R, Estienne A, Fabre S, Mansanet C, Monget P. The ovarian reserve of primordial follicles and the dynamic reserve of antral growing follicles: what is the link? Biol Reprod 2014; 90: 85-91.
44. Muskhelishvili L, Wingard SK, Latendresse JR. Proliferating cell nuclear antigen--a marker for ovarian follicle counts. Toxicol Pathol 2005, 33: 365–368.
45. Nakamura T, Ichii O, Irie T, Mizoguchi T, Shinohara A, Kouguchi H, Sunden Y, Otsuka-Kanazawa S, Ali Elewa YH, Koshimoto C, Nagasaki KI, Kon Y. Cotton rats (Sigmodon hispidus) possess pharyngeal pouch remnants originating from different primordia. Histol Histopathol 2018; 33: 555-565.
46. Nakamura T, Ichii O, Irie T, Kouguchi H, Sotozaki K, Chihara M, Sunden Y, Nagasaki KI, Tatsumi O, Elewa YHA, Kon Y. Cotton rat (Sigmodon hispidus) develops metabolic disorders associated with visceral adipose inflammation and fatty pancreas without obesity. Cell Tissue Res 2019; 375: 483-492.
47. Nakamuta N, Kobayashi S. Expression of p63 in the mouse primordial germ cells. J Vet Med Sci 2004; 66: 1365-1370.
48. Oktem O, Urman B. Understanding follicle growth in vivo. Hum Reprod 2010; 25: 2944–2954.
49. Oliveira RL, Silva CB, Silva EO, Gerez JR, Santos MM, Sarapião FD, Sartori L, Bracarense APFRL, Seneda MM. Proliferative activity of multi-oocyte follicles in sheep ovaries. Sm Rum Res, 2017a; 146: 58-60.
50. Oliveira RL, Silva-Santos KC, González SM, Bizarro-Silva C, Machado FZ, Bracarense AP, Seneda MM. Proliferative activity of oocytes in multi-oocyte follicles of bovine ovary. Semina: Ciências Agrárias 2017b; 38: 3591-3597.
51. Payan-Carreiraa R, Pires MA. Multioocyte follicles in domestic dogs: A survey of frequency of occurrence. Theriogenology 2008; 69: 977-982.
52. Pepling ME, de Cuevas M, Spradling AC. Germline cysts: a conserved phase of germ cell development? Trends Cell Biol 1999; 9: 257–262.
53. Pepling ME, Spradling AC. Female mouse germ cells form synchronously dividing cysts. Development 1998; 125: 3323–3328.
54. Pepling ME, Spradling AC. Mouse ovarian germ cell cysts undergo programmed breakdown to form primordial follicles. Dev Biol 2001; 234: 339–351.
55. Pepling ME, Wilhelm JE, O'Hara AL, Gephardt GW, Spradling AC. Mouse oocytes within germ cell cysts and primordial follicles contain a Balbiani body. Proc Natl Acad Sci 2007; 104: 187–192.
56. Pepling ME. Follicular assembly: mechanisms of action. Reproduction 2012; 143:139–149.
57. Pérez-Sanz J, Arluzea J, Matorras R, González-Santiago N, Bilbao J, Yeh N, Barlas A, Romin Y, Manova-Todorova K, Koff A, de la Hoz C. Increased number of multi-oocyte follicles (MOFs) in juvenile p27Kip1 mutant mice: potential role of granulosa cells. Hum Reprod 2013; 28: 1023-1030.
58. Prince GA. The cotton rat in biomedical research. AWIC News 1994; 5: 3-5.
59. Qi A, Zhang Z, Cao G, Zhang Y. Histological study of germ cells development and apoptosis in mongolian sheep fetal ovaries. Anim Reprod Sci 2008; 103: 179–186.
60. Reynaud K, Viaris de Lesegno C, Chebrout M, Thoumire S, Chastant-Maillard S. Follicle population, cumulus mucification, and oocyte chromatin configuration during the periovulatory period in the female dog. Theriogenology 2009; 72: 1120-1131.
61. Robinson ES, Stephenson EM, Stephenson NG. Nuclear constitution of primary oocytes of the frog Leiopelma hochstetteri (Ascaphidae). Copeia 1973; 1: 173-6.
62. Safran A, Reubinoff BE, Porat-Katz A, Werner M, Friedler S, Lewin A. Intracytoplasmic sperm injection allows fertilization and development of a chromosomally balanced embryo from a binovular zona pellucida. Hum Reprod 1998; 13: 2575-2578.
63. Sato T, Kim H, Kakuta H, Iguchi T. Effects of 2,3-Bis (4-hydroxyphenyl)-propionitrile on induction of polyovular follicles in the mouse ovary. In Vivo 2018; 32: 19-24.
64. Sawyer HR, Smith P, Heath DA, Juengel JL, Wakefield SJ, McNatty KP. Formation of ovarian follicles during fetal development in sheep. Biol Reprod 2002; 66: 1134–1150.
65. Sekula M, Tworzydlo W, Bilinski SM. Morphogenesis of the Balbiani body in developing oocytes of an orthopteran, Metrioptera brachyptera, and multiplication of female germline mitochondria. J Morphol 2020; 281: 1142–1151.
66. Silva-Santos KC, Seneda MM. Multioocyte follicles in adult mammalian ovaries. Anim Reprod 2011; 8: 58-67.
67. Smitz JEJ, Cortvrindt RG. The earliest stages of folliculogenesis in vitro. Reproduction 2002; 123: 185–202.
68. Stankiewicz T, Blaszczyk B, Udala J. A study on the occurrence of polyovular follicles in porcine ovaries with particular reference to intrafollicular hormone concentrations, quality of oocytes and their in vitro fertilization. Anat Histol Embryol 2009; 38: 233-239.
69. Su W, Guan X, Zhang D, Sun M, Yang L, Yi F, Hao F, Feng X, Ma T. Occurrence of multi-oocyte follicles in aquaporin-8 deficient mice. Reprod Biol Endocriol 2013; 11: 1-6.
70. Tajima K, Orisaka M, Mori T, Kotsuji F. Ovarian theca cells in follicular function. Reprod Biomed Online 2007; 15: 591–609.
71. Tanaka E, Arai K. Research on cotton rat breeding. Exp Anim 1967; 16: 121-126.
72. Telfer E, Gosden RG. A quantitative cytological study of polyovular follicles in mammalian ovaries with particular reference to the domestic bitch (Canis familiaris). J Reprod Fertil 1987; 81: 137-147.
73. Tian Y, Shen W, Lai Z, Shi L, Yang S, Ding T, Wang S, Luo A. Isolation and identification of ovarian theca-interstitial cells and granulose cells of immature female mice. Cell Biol Int 2015; 39: 584-590.
74. Tilly JL. Ovarian follicle counts - Not as simple as 1, 2, 3. Reprod Biol Endocrinol 2003; 1: 1-4.
75. Tingen C, Kim A, Woodruff TK. The primordial pool of follicles and nest breakdown in mammalian ovaries. Mol Hum Reprod 2009; 15: 795-803.
76. Urata Y, Salehi R, Lima PDA, Osuga Y, Tsang BK. Neuropeptide Y regulates proliferation and apoptosis in granulosa cells in a follicular stage-dependent manner. J Ovarian Res 2020; 13: 1-11.
77. Uslu B, Dioguardi CC, Haynes M, Miao DQ, Kurus M, Hoffman G, Johnson J. Quantifying growing versus non-growing ovarian follicles in the mouse. J Ovarian Res 2017; 10: 1-11.
78. Waldum HL, Rørvik H, Falkmer S, Kawase S. Neuroendocrine (ECL cell) differentiation of spontaneous gastric carcinomas of cotton rats (Sigmodon hispidus). Comp Med 1999; 49: 241-247.
79. Williams SA, Stanley P. Mouse fertility is enhanced by oocyte-specific loss of core 1-derived O-glycans. FASEB J 2008; 22: 2273–2284.
80. Wodarz A. Establishing cell polarity in development. Nat Cell Biol 2002; 4: 39-44.
81. Wyllie AH. Apoptosis: cell death in tissue regulation. J Pathol 1987; 153: 313-316.
82. Xu B, Hua J, Zhang Y, Jiang X, Zhang H, Ma T, Zheng W, Sun R, Shen W, Sha J, Cooke HJ. Proliferating cell nuclear antigen (PCNA) regulates primordial follicle assembly by promoting apoptosis of oocytes in fetal and neonatal mouse ovaries. PloS one 2011; 6: e16046.
83. Yamashita Y, Nakamura T, Kanazawa SO, Ichii O, Kon Y. Morphological characteristics observed during early follicular development in perinatal MRL/MpJ mice. Jp J Vet Res 2015; 63: 25-36.
84. Yang MY, Fortune JE. The Capacity of primordial follicles in fetal bovine ovaries to initiate growth in vitro develops during mid-gestation and is associated with meiotic arrest of oocytes. Biol Reprod 2008; 78: 1153–1161.
85. Yano K, Hashida N, Kubo T, Ohashi I, Koizumi A, Kageura R, Furutani K, Yano C. Repeated collection of conjoined oocytes from a patient with polycystic ovary syndrome, resulting in one successful live birth from frozen thawed blastocyst transfer: a case report. J Assist Reprod Genet 2017, 34: 1547-1552.
86. Zeilmaker GH, Alberda AT, van Gent I. Fertilization and cleavage of oocytes from a binovular human ovarian follicle: a possible cause of dizygotic twinning and chimerism. Fertil Steril 1983; 40: 841-843.
87. Zhang M, Zhang Z, Hou R, Li G, Yu J, Zhang A, Wang J, He G, Lan J, Fujihara N. Ultrastructure of “twin oocytes” in the ovaries of the giant pandas (Ailuropoda melanoleuca). J Mamm Ova Res 2001; 18:48-51.
88. Zheng W, Zhang H, Liu K. The two classes of primordial follicles in the mouse ovary: their development, physiological functions and implications for future research. Mol Hum Reprod 2014; 20: 286–292.