7 th International Congress and Expo on Bioscience and Biotechnology Paris, France during September 23-24 2019 Honorable Keynote speakers Dr. Natalia G. Plekhova Pacific State Medical University, Russian Federation Honorable Keynote speaker Dr. Natalia G. Plekhova is giving talk at Bioscience-2019 Conference with title of THE CELLULAR UPTAKE, PROOXIDANT AND CYTOTOXICITY ACTIVITY OF THE PHOTOSENSITIZERS DERIVED FROM CHLOROPHYLL Short Biography: Natalia G. Plekhova is a Head of Central Researcher Laboratory Pacific State Medical University, Russia. She earned her PhD in Biology and has published over 120 peerreviewed journal articles. The theoretical positions as a new scientific achievement in the field of viral cytopathology, which is essential in the problem of research on the cellular and molecular interaction of cells and viruses, were developed. The role of innate immunity cells (macrophages and neutrophils, dendritic cells) in infections caused by