Product # 414157131
$1.92

Celebrate the groundbreaking work of Dr. James Till and Dr. Ernest McCulloch in the field of stem cell science with this Official First Day Cover.

Dr. Till and Dr. McCulloch transformed the world’s understanding of tissue renewal by confirming the existence of stem cells – the master cells of a tissue or organ. Their work at the Ontario Cancer Institute (now Princess Margaret Cancer Centre) laid the foundations for a whole new field of study that may hold the key to treating many intractable medical conditions, including blindness, paralysis and cancer.

This Official First Day Cover bears a commemorative cancel that includes the day of issue and the city where Dr. Till and Dr. McCulloch made their notable contributions – Toronto, ON.