- They do not store vital dyes and, in the structure of their nucleus and the behavior of their protoplasm, resemble mesenchymal cells.
- It is likely that lignified cells that lack membranes and protoplasm also lack sensitivity.
- The protoplasm is extruded as pseudopods via the aperture and through any perforations that may be present in the test.
- It was eventually realised that the culprit was a non-cellular form of ‘life’ that could diffuse through the cell walls and membranes into the cell's protoplasm.
- Their protoplasm has a distinct reticular structure and contains-especially in the experiments with the introduction of egg yolk into the subcutaneous tissue-numerous clear vacuoles and granular inclusions.