[Role of the mesothelium of the parietal peritoneum in the process of absorption of true solutions and india ink suspension from the abdominal cavity].

The method of electron microscopy was applied to the study of absorption from the abdominal cavity of hypotoanic, physiological, hypertonic solutions and of the Indi-ink suspension on physiological saline. Quantitative assessment of pynocytosis was conducted on electron microphotographs. Passage through the mesothelium of true solutions was realized by way of diffusion through the cytoplasm of its cells and by the intercellular spaces; as to the India ink suspension, it passed only by way of the open intercellular spaces. Pynocytosis in the mesothelial cells coursed from their basal portion to the apical one and was directed to the balancing of the concentration of the protein and salt composition in the serous fluid.