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Table 1 Classification of the estrous cycle of rats in different groups

From: Estrogen modulation of pain perception with a novel 17β-estradiol pretreatment regime in ovariectomized rats

 Day3Day21Day26Day37Day41
Controlpro/es/depro/es/depro/es/depro/es/depro/es/de
OVXdedededede
E-decreasedepre/esesespre/es
E-increasedepre/eseseses
  1. pro, proestrus; de, di-estrus; pre, pre-estrus; es, estrus