The project aims to extend on an existing optofluidic biological cell stretching technique by using multiple optical tweezers to trap a biological cell in a microfluidic flow while stretching the trapped cell by a fluidic drag force exerted on the cell. The resulting shape deformation of the biological cells allows the cell's elasticity to be measured. The deformation will provide a useful bio-mechanical indicator of the cell's health status. A healthy cell is generally a more elastic cell. The project will study the stretching of cells prepared under different conditions to mimic different health conditions. The project will primarily use rabbit red-blood cells as samples for experiments. Other cells of interest may also be explored in due course.