Students, teachers and staff have raised more than $3.8 million for OMRF since 1975
It marked the 45th consecutive year Putnam City Schools have supported cancer research at OMRF.
Over the past 43 years, Putnam City students, teachers and families have raised more than $3.6 million to combat cancer.
PC Schools made a significant donation to cancer research for the 42nd consecutive year.
OMRF opened its doors for 17 elementary-school scientists on Tuesday.
In all, PC schools have raised more than $3.4 million for OMRF.