If you attach characterized by scanning electron micrograph of the overall morphology of the crowd will be more perfect on this basis, but because the sample has expired, it can not be tested, but the scanning electron microscope will be considered in future studies.
If attached on this basis to characterize the overall onlooker appearance will be more perfect, but because the sample has expired, so can not be tested, but the scanning electron mirror technology will be considered in future research.
On this basis, it would be more perfect to attach SEM image to characterize the overall surrounding morphology, but because the sample has expired, it can not be tested, but SEM technology will be considered in future research.