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Table 2 Means ± SEM of estradiol serum concentration (pg/ml) in animals with bilateral perforation of the peritoneum (PP) or bilateral ovariectomy (CAS) performed at 13:00 h on Diestrus 1, Diestrus 2 or Proestrus, sacrificed one hour later

From: The role of the muscarinic system in regulating estradiol secretion varies during the estrous cycle: the hemiovariectomized rat model

Group N Diestrus 1 N Diestrus 2 N Proestrus
Bilateral PP 8 76.3 ± 6.5 10 63.3 ± 7.1 9 93.7 ± 16.8
CAS 7 20.2 ± 3.7* 10 17.3 ± 2.6* 6 14.7 ± 5.4*
  1. * p < 0.05 vs. bilateral PP group (Student's t test)