Division II.3 Examination of other tissues

The technique referred to in point II.2.6 may be applied to other fish tissues such as liver, spleen and heart providing a reasonable quantity of endothelial cells, leucocytes or lymphocytes can be deposited on the slide. The staining procedure shall remain the same for each tissue, although for some tissues it may be preferable to omit the propidium iodide staining and rely on the phase illumination to identify the cell types present in the imprint.