The following procedure has proven to be successful as routine trichrome stain on paraffin embedded material: 1) Mayer's hemalum for 10 min, followed by running tap water wash; 2) staining in 1% Orange G in 1% acqueous PTA for 5 min and rinsing a few seconds in distilled water; 3) Aniline blue 1% acqueous for 5 min, followed by few seconds distilled water wash. Dehidratation in ethanol, or by blotting followed by t-buthanol or 1:3 terpineol-xylene, clearing and mounting, completed the procedure.