Donna Marcal is the Founding Director of Sentryca Pty Ltd, an Australian company specializing in natural topical therapeutics. Marcal is a highly educated professional, having earned a Ph.D. in Biochemistry from the University of Ottawa, a B.Sc. in Biology (Biomedical) from Laurentian University/Université Laurentienne, and a Diploma in Clinical Laboratory Science/Medical Technology/Technologist from Canadore College. Marcal has a wealth of experience in medical research, having worked as both a Post Doctoral Scientist and an NSERC Post Doctoral Fellow in the Macrophage Biology Group at UNSW, as well as a Laboratory Technologist at Sudbury Regional Hospital. Additionally, Marcal contributed her expertise to the Atherosclerosis Research Group at both the ANZAC Research Institute and The ANZAC Research Institute, and served as a Research Associate at the Australian Institute for Bioengineering and Nanotechnology AIBN.