The morphology of uveal malignant melanomas. An in vitro study using the scanning electron microscope.

Scanning electron microscopy (S.E.M.) has been performed on tissue cultures obtained from four choroidal malignant melanomas. The morphology of these cells has been demonstrated using this technique. Microvilli were found to present on the surfaces of all cells studied. These microprocesses often formed a connection between the cell and the cover slip, or other tumour cells. Rounded vesicles were demonstrated on the surfaces of some cells. It is possible that some of the larger vesicles contained melanosomes.