Table 2 Special stains for endomyocardial biopsies.

Stain	Frequent indication
Methyl green pyronine	Lymphocytes (myocarditis/allograft rejection)
Movat pentachrome	Connective tissue/vasculature
Masson elastic trichrome	Connective tissue/vasculature
Prussian blue	Iron
Sulfated Alcian blue	Iron and amyloid
Congo red	Amyloid
Ziehl‐Neelsen	Granulomas (acid fast bacilli)
Periodic acid Schiff	Intramyocardial glycogen/vasculature/fungi
Gram	Bacteria (endocarditis)
Gomori methenamine silver	Fungi
Haematoxylin phloxine saffron	Connective tissue
Methyl violet	Amyloid