“…Macchiavello's and Castafieda's stains, whilst satisfactory for demonstrating inclusion bodies, do not reveal the cellular pattern. Iodine staining (Rice, 1936;Gilkes, Smith, and Sowa, 1958), which is invaluable for the rapid demonstration of inclusions in conjunctival scrapings (Fig. 2a), cannot be used on genital material, because many cells, in the urethral and cervical epithelium contain glycogen and therefore stain so intensely with iodine (Jones, Collier, and Smith, 1959) that the recognition of inclusions is impossible (Fig.…”