Dr. Jonathan Tilly has been working in research in women’s health and fertility for over 20 years. He has received the support of a grant from the National Institutes of Health (NIH) that has been renewed yet again, with the current period extending the grant to a quarter of a century of unbroken funding.  Read on to learn about his past two decades of groundbreaking discoveries.

After eight years of work, a new paper by professor Jonathan Tilly, a reproductive and stem cell biologist, “puts the final nail in the dogma coffin,” toppling a long-held belief about female fertility and ovarian aging. His findings confirm that female mammals make new eggs during adult life, that ovarian stem cells are critical to the process, and that the newly formed eggs contribute directly to maintenance of ovarian function…

Jonathan Tilly's infertility research has led to the birth of a baby born with an assist from stem cells. Tilly is the chair of the Department of Biology.

Jonathan Tilly's infertility research has led to the birth of a baby born with an assist from stem cells. Tilly is the chair of the Department of Biology.

Ellie Shin, SSH/S’16, was deter­mined to work on co-​​op in a campus research lab. She found one, and has quickly made the most of her experiences.

In 2012, Jonathan Tilly's team pub­lished research in which it iden­ti­fied that certain cells in adult human ovaries pro­duce viable new eggs.