Joaquin Navajas Acedo

Predoctoral Researcher

Hometown: Madrid, Spain


Research Interests: Joaquin is attempting to understand how, why and where cell polarity is established on the zebrafish lateral line; and how that would help us understand development and disease.



Tatjana Piotrowski, PhD

Principal Investigator

Hometown: Herrenberg, Germany


Research Interests: Dr. Piotrowski says she always liked natural science. Although that could account for her interest in fish, like many embryologists, she is simply awed by watching an embryo develop. “One of the things I love about our work is the beauty of these embryos,” she says. “It is a privilege to sit at the  microscope and see a single cell turn into an embryo—it is an incredibly aesthetic experience.”

Madeleine St. Peter

Research Technician

Hometown: Chandler, Arizona


Madeleine is a recent graduate from Arizona State University. Her interest in biological research began when she studied neural mechanisms of addiction as an undergraduate. Ever since her summer internship in the Piotrowski lab, she has been interested in studying genetic mechanisms underlying hair cell regeneration in zebrafish, particularly the BMP pathway.





Mark Lush, PhD

Research Specialist

Hometown: Louisville, Kentucky


Research Interests: Mark has had a long-standing interest in developmental neurobiology. Mark says, "Zebrafish have proven to be an incredibly powerful model system allowing for the in vivo study of the development of the nervous system.  My research includes two main goals; the discovery of new genes required for sensory hair cell development and regeneration and the elucidation of the cellular signaling pathways used by Schwann cells to control lateral line stem cell proliferation."


Amber Garvey

Senior Administrative Assistant

Hometown: Saint Joseph, Missouri


Education/Interests: Bachelor of Science in Biology with an emphasis in health science and a minor in Spanish. I truly enjoy supporting Dr. Piotrowski's research lab. It is great to work with such a dedicated group of researchers. I have always wanted to support the research sciences, particularly research that can eventually serve to improve human health, and I am happy I can support the scientific community at Stowers in my administrative role.

Daniel Diaz

Bioinformatics Intern

Hometown: Long Beach, California


Research Interests: Daniel's interest in developmental biology spawned from his experiences studying Nematostella regeneration and stem cell biology as an undergrad. After graduating, he decided to pursue the rapidly growing field of bioinformatics through the University of Oregon's bioinformatics master's program. Now he combines his love for developmental biology and technology to work towards characterizing regeneration in the zebrafish neuromast through single cell transcriptomics.

Sungmin Baek

Postdoctoral Research Associate

Hometown: Seoul, South Korea


Research Interests:

Sungmin has had a long-term view of his research career in developmental biology and cell signaling. In particular, how cell-cell communication and cell fate specification are regulated and which factors orchestrate this phenomenon and translate into tissue morphogenesis. In the Piotrowski lab, his research will be focused on the identification and characterization of novel regulators which are involved in zebrafish lateral line development and regeneration.


Sumana Ghosh

Postdoctoral Research Associate

Coming soon!

Nicolas Denans

Postdoctoral Research Associate

Hometown: La Seyne sur mer, France


I am fascinated with understanding how cells communicate with each other to form or regenerate an organ. I use high resolution time-lapse imaging to visualize the mechanisms of cell communications that varies a lot depending on the cellular landscape. Embryonic development is the most beautiful and complex process, but if we ask the embryo nicely and smartly enough (around 1% of the time) it will reveal the truth.