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Table 1 Length of various phases of the oestrous cycle

From: Staging of the estrous cycle and induction of estrus in experimental rodents: an update

Oestrous phase

Cycle length (hours)

Rats

Mice

Proestrus

14

<  24

Estrus

24–48

12–48

Metestrus

6–8

8–24

Diestrus

48–72

48–72