People in Hayes lab

Dr. Madeline Hayes photo

Madeline Hayes, PhD

Madeline is a Scientist at SickKids and Assistant Professor in the Department of Molecular Genetics at the University of Toronto. She completed her PhD at the University of Toronto and postdoctoral training in the laboratory of Dr. David Langenau, at the Massachusetts General Hospital and Harvard Medical School. In 2019, Madeline returned to SickKids and worked with Drs. Bret Pearson, Meredith Irwin and David Kaplan developing translational zebrafish cancer models, before starting her own lab in 2022.

Madeline loves zebrafish and spending both park and couch time with her dogs, Pip and Flo.

Alex Weiss - Lab technician in Madeline Hayes lab

Alex Weiss M.Sc.
Research Technologist II

Alex is a Research Technologist II at SickKids in the Developmental and Stem Cell Biology Program. Alex completed his undergraduate degree and a Masters of Science in Molecular and Cellular Biology at the University of Guelph. In 2018, Alex started at SickKids with Dr. Bret Pearson, working with zebrafish and planarians and helped develop our novel zebrafish brain tumor model using genetic techniques, transplantation and live imaging.

Outside of the lab, Alex likes gaming with friends, getting out into nature, and hanging out with his many pets.