International Journal of Sciences: Basic and Applied Research (IJSBAR) ISSN 2307-4531 (Print & Online) http://gssrr.org/index.php?journal=JournalOfBasicAndApplied --------------------------------------------------------------------------------------------------------------------------- 92 The Role of FSH, LH, Estradiol and Progesterone Hormone on Estrus Cycle of Female Rats Tetty Rina Aritonang a , Sri Rahayu b , Lenny Irmawaty Sirait c , Marni Br Karo d ,Tigor Peniel Simanjuntak e , Rosdiana Natzir f , Andi Wardihan Sinrang g , Muh Nasrum Massi h , Mochammad Hatta i , Emma Kamelia j* a,c,d Midwifery Program of Medistra Health Higher School 17114. Jakarta, Indonesia b Faculty of Health Science, State University of Singaperbangsa, Karawang 41361, West Java, Indonesia e Department of Obstetrics and Gynecology, Faculty of Medicine of Christian University of Indonesia 13630, Jakarta, Indonesia f Department of Biochemistry, Faculty of Medicine, Hasanuddin University, Makassar 90245, Indonesia g Department of Physiology, Faculty of Medicine, Hasanuddin University, Makassar 90245, Indonesia a,b,c,d,e,h,i,j Molecular Biology and Immunology Laboratory for Infections Diseases, Faculty of Medicine, Hasanuddin University, Makassar 90245. Indonesia j Dental Health Study Program, Tasikmalaya Health Polytechnic 46196. West Java, Indonesia a Email: tetty_art@yahoo.com, b Email: rahayue25@gmail.com, c Email: jes_irma@yahoo.com d Email: marni_karo@yahoo.com, e Email: tigorpsimanjuntak@gmail.com, f Email: rosdiananatzir@yahoo.com g Email: wardihans@gmail.com, h Email: nasrumm2000@yahoo.com, i Email: hattaram@indosat.net.id j Email: kamelia.emma@gmail.com Abstract The estrous cycle is a recurrent process that describes changes in reproductive hormone levels caused by ovarian activity under the influence of pituitary hormones. Estrous cycles are characterized by morphological changes in ovaries, the uterus and the vaginal cells. The length of the estrous cycle and the frequency of the reproductive cycle in each organism are different. In mice, lasts for about 4-5 days. ------------------------------------------------------------------------ * Corresponding author. brought to you by CORE View metadata, citation and similar papers at core.ac.uk provided by GSSRR.ORG: International Journals: Publishing Research Papers in all Fields