Archival formalin-fixed, paraffin-embedded (FFPE) tissue blocks has been adopted as the standard tissue process method. More than one hundred years, hundreds and thousands FFPE tissue blocks stored at pathology are an invaluable resource for clinical and basic research. Antigen retrieval (AR) has created a revolutionary way to recover the antigenicity masked by formalin fixation in these tissue blocks. Since the AR developed in 1991, it has widely been used in pathology and other morphologic sciences... Mehr