Multiple choice The erythrocytes are also called red blood cells.The dye used to stain erythrocytes is martius yellow methyl orange methyl red naphthol green B Reveal answer Fill a bubble to check yourself A Correct answer Explanation Martius yellow is a dye. It has been used to stain erythrocytes yellow, so they contrast well with red fibrin, in trichrome methods such as Lendrum's Picro Mallory and Slidder's Martius, Scarlet and Blue (MSB).