--- title: 3-D Printed Ovaries Are Helping Mice to Get Pregnant description: A recent study by Northwestern University showed that mice were able to get pregnant with 3-D printed ovaries canonical: https://time.com/4782557/3d-printed-ovaries-pregnant-mice-study/ author: TIME article:opinion: false article:content_tier: free article:published_time: 2017-05-17T17:41:08.000Z article:modified_time: 2026-02-23T04:58:28.859Z article:section: Science og:title: 3-D Printed Ovaries Are Helping Mice to Get Pregnant og:description: This could lead to advances in restoring fertility in women og:url: https://time.com/4782557/3d-printed-ovaries-pregnant-mice-study/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt204207d84c683205/6988cdb3656a3f74f2bd008c/gettyimages-3459989.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 3000 og:image:height: 1688 og:image:alt: mice-study-3d-printed-ovaries og:type: article twitter:card: summary_large_image twitter:title: 3-D Printed Ovaries Are Helping Mice to Get Pregnant twitter:description: This could lead to advances in restoring fertility in women twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt204207d84c683205/6988cdb3656a3f74f2bd008c/gettyimages-3459989.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # 3-D Printed Ovaries Are Helping Mice to Get Pregnant > Sponsored content. 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Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-network-2026q3/newsletters?i=ef5a6e17-b3df-4a9a-a509-5b77b9f608e4&cr=time-nl-network-2026q3-v1) by [Lisa Marie Segarra](https://time.com/author/lisa-marie-segarra/) ## Lisa Marie Segarra May 17, 2017 5:41 PM UTC  TOKYO, JAPAN : Kaguya, the fatherless mouse at the Tokyo University of Agriculture lab in Tokyo on April 23, 2004 in Tokyo, Japan. Kaguya, a fatherless mouse created by a group of researchers chiefly from Japan and South Korea. They have succeeded in creating a fatherless mouse without sperm. (Photo by koichi Kamoshida/Getty Images) TOKYO, JAPAN : Kaguya, the fatherless mouse at the Tokyo University of Agriculture lab in Tokyo on April 23, 2004 in Tokyo, Japan. Kaguya, a fatherless mouse created by a group of researchers chiefly from Japan and South Korea. They have succeeded in creating a fatherless mouse without sperm. (Photo by koichi Kamoshida/Getty Images) Koichi Kamoshida—Getty by [Lisa Marie Segarra](https://time.com/author/lisa-marie-segarra/) ## Lisa Marie Segarra May 17, 2017 5:41 PM UTC A recent [study by Northwestern University](https://news.northwestern.edu/stories/2017/may/3-d-printed-ovaries-offspring/) showed that mice were able to get pregnant with 3-D printed ovaries — a development that could help lead to advances in [restoring fertility](http://time.com/4765926/future-fertility-pregnancy/) and hormone production in women who have [survived cancer.](http://motto.time.com/4354935/breast-cancer-selfie-transgender-rights/) After replacing their ovaries with 3-D printed copies, the mice were able to ovulate, [give birth](http://time.com/4071889/toronto-zoo-panda-cubs/) and nurse their young, according to the study [published in _Nature Communications_](https://www.nature.com/articles/ncomms15261). “What happens with some of our cancer patients is that their ovaries don’t function at a high enough level and they need to use hormone replacement therapies in order to trigger puberty,” said Monica Laronda, a co-lead author of the study. The 3-D printed structures used in the study were able to fulfill their goal to restore fertility and hormone production in the mice. 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