Objective To investigate the advantages of the peritoneoscopic appendectomy through the umbilicus with Zhou s umbilicus lancet and trocar balloon.

The schwannoma is seen microscopically to be composed of spindle cells (like most neoplasms of mesenchymal origin), but the cells are fairly uniform and there is plenty of pink cytoplasm.

The observation under microscope showed that the rhizobia were present in percycle cells of vascular system of the tobacco hairy roots and in cortex cells and intercellular spaces of rice roots.