I want to know the Hematopoietic stem cells' surface charge? is there any authentic article about that? and How we can measure this charge? what is the method or protocol as we know that assessment stem cells in in-vitro are difficult?
I would search the literature first, but if nothing useful turns up, you could measure the net charge on the stem cells (assuming that you have a reliable way of collecting them) by setting up an aqueous version of the Michelson-Morley experiment for measuring the charge on the electron, but scaled up to the larger size and charge on the cell. Essentially, by placing electrodes above and below a cell culture suspension with a medium density less than that of the cells, so that they will tend to sink in the absence of a current, one can maintain those cells with charge sufficient to offset their gravitational sedimentation. Adjusting the charge across the electrodes to find one that maintains the cells in suspension (offsets their gravitational force and density against the electrical force to suspend them) should let you calculate the net charge on the cells.