This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to cite this article as doi: differences between this version and the Version of Record. Please 10.1111/RDA.13693 This article is protected by copyright. All rights reserved (DR ELSHYMAA ABDELNABY )Orcid ID : 0000-0002-3137-4166 Article type : Original Article Authorship Statement: Elshymaa A. Abdelnaby: Data curation, Formal analysis, Investigation, Methodology, Writing - original draft. Amal M. Abo El-Maaty: Visualization, Supervision, Writing - review & editing. Effect of the side of ovulation on the uterine morphometry, blood flow, progesterone, estradiol, and nitric oxide during spontaneous and induced estrus in lactating dairy cows. Running head: uterine thickness and blood flow in relation to hormones Elshymaa A. Abdelnaby a* , Amal M. Abo El-Maaty b a Theriogenology, Faculty of Veterinary Medicine, Cairo University , Giza, Egypt b Animal Reproduction and AI Dept., Veterinary Division, National Research Centre, Dokki, Giza, Egypt Corresponding author: Elshymaa A. Abdelnaby Address: theriogenology, Faculty of Veterinary Medicine, Cairo University , Giza, Egypt Postal address: Giza square Postal code: 12211 Mail Address: (elshymaaahmed@yahoo.com) Mobile: +202-01128281224 Accepted Article