1999
DOI: 10.1002/(sici)1097-0185(19990101)254:1<116::aid-ar15>3.0.co;2-x
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Estrous stage determination in rats by means of scanning electron microscopic images of uterine surface epithelium

Abstract: With the results presented in this paper we devised an alternative method to precisely date the rat endometrium in relation to the estrous cycle. This is done by the exclusive use of scanning electron microscopy.Owing to its short estrous cycle (4 to 6 days, depending on age), the rat is ideally suited for the examination of cyclic changes occurring in the uterine epithelium. The cycle stage of rats predated by vaginal smear cytology was verified through the measurement of hormones relevant to the estrous cycl… Show more

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Cited by 62 publications
(39 citation statements)
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References 25 publications
(16 reference statements)
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“…The extract was administered as a suspension in a solution of Arabic gum in water by means of esophageal gavage over a period of 21 days. After anaesthesia and decapitation, the livers of the animals were perfused for fixation, and tissue blocks were excised and prepared for electron microscopy as described previously in detail [14]. The study protocol had been accepted by the Animal Ethics Committee of the Canton of Basel.…”
Section: Methodsmentioning
confidence: 99%
“…The extract was administered as a suspension in a solution of Arabic gum in water by means of esophageal gavage over a period of 21 days. After anaesthesia and decapitation, the livers of the animals were perfused for fixation, and tissue blocks were excised and prepared for electron microscopy as described previously in detail [14]. The study protocol had been accepted by the Animal Ethics Committee of the Canton of Basel.…”
Section: Methodsmentioning
confidence: 99%
“…The ovulation occurs from the beginning of proestrus to the end of estrus (Young et al, 1941;Schwartz, 1964). From the onset of sexual maturity up to the age of 12 months, the mean cycle length in the female rat is 4 days (Long & Evans, 1922;Freeman, 1988;Mandl, 1951), and this short cycle length makes the rat an ideal animal for investigation of changes occurring during the reproductive cycle (Spornitz et al, 1999;Marcondes et al, 2001).…”
Section: Introductionmentioning
confidence: 99%
“…Como as ratas possuem ciclos reprodutivos curtos (4 a 5 dias), tornam-se modelos animais ideais para investigar alterações que ocorrem durante o ciclo estral. O estro dura aproximadamente 12h, geralmente no período escuro, com ovulação espontânea (COBEA, 1996;Spornitz et al, 1999;Marcondes et al, 2002).…”
Section: Discussionunclassified