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. 2008 Jun 5;89(3):654–664. doi: 10.1644/06-MAMM-A-436R1.1

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© 2008 American Society of Mammalogists

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Fig. 2 — Temporal relationship of weekly mean blood levels of estradiol (pg/ml), progesterone (ng/ml), prolactin (ng/ml), and relaxin (exp(optical density) × 10; for graphical representation only), aligned to the estimated day of ovulation (day 0). A) Pseudopregnant females; B) pregnant coyotes. Solid arrow indicates ovulation. Columns indicate weekly number of copulatory ties observed during the breeding seasons in 2000–2003; dashed arrow indicates day of parturition (day 64 postovulation). Solid bars indicate phases of ovarian cycle studied.