| Detachment of cover glasses | 
      
        | 1. The cover glass is removed    by immersion in xylene (heating at 37°C or 60°C overnight when necessary). | 
      
        | 2. The mounting agent is    removed using new xylene. | 1 hr×3 times | 
      
        | 3. 100% ethanol (removal of    xylene) | 15 min×2 times | 
      
        | 4. Specimens are passed    through a descending ethanol series (95-70%) for 5 minutes each, and washed    with water (2 min). | 
      
        | Decolorization of old Pap    specimens | 
      
        | Specimens are treated with an    optical clearing agent (SCALEVIEW-A2) for 5-10 minutes and placed in    phosphate buffer (pH, 7.2) to terminate the reaction of the clearing agent. | 
      
        | Pap staining | 
      
        | Basically, the routine    staining method is used. However, it is recommended to use a longer time    (30-40 dips) for differentiation after hematoxylin staining. |