Lewis and Miller's Trichrome
for Pituitary cells

This is a modification of Kricheski's method


Solution A
Acid fuchsin 0.25 g
Distilled water 100 mL
Solution B
Methyl blue, 1% aqueous 30 mL
Orange G, 1% aqueous 30 mL
Phosphomolybdic acid, 1% aqueous 30 mL

Tissue sample
5µ paraffin sections of neutral buffered formalin fixed tissue are likely suitable. Other fixatives are also likely to be satisfactory. Most trichrome stains benefit from picric acid or mercuric chloride fixation. Formalin fixed tissues may benefit from secondary fixation of sections in Bouin's fluid.


  1. Bring sections to water via xylene and ethanol.
  2. Place into solution A for 30 minute.
  3. Rinse well with distilled water.
  4. Place into solution B for 24 hours.
  5. Dip 2 or 3 times in 70% ethanol.
  6. Dehydrate and differentiate with ethanol for 1-3 minutes.
  7. Clear with xylene and mount with a resinous medium.

Expected results


  1. Although not specified, an acid resistant nuclear stain such as Weigert's iron hematoxylin could be inserted prior to staining with solution A.


Gray, Peter. (1954)
The Microtomist's Formulary and Guide.
Originally published by:– The Blakiston Co.
Republished by:– Robert E. Krieger Publishing Co.
    Kricheski, (1931)
    Stain technology, v.6, pp.97
    Lewis and Miller, (1938)
    Stain technology, v.14, pp.111




Translate in
Google Translate