title: Tissue protection immunohistochemistry: a useful adjunct in the interpretation of prostate biopsy specimens and other selected cases in which immunostains are needed on minute lesions.
abstract: Performing immunohistochemical analysis on minute lesions is a challenging task, primarily because they frequently disappear when the paraffin block is recutfor immunostaining purposes. This is a particularly common occurrence with prostate biopsy specimens, in which immunostains for high-molecular-weight cytokeratin commonly are used as an adjunct to H&E examination for aiding in the interpretation of minute "suspicious" lesions. We describe an original method designated tissue protection immunohistochemistry, that allows the performance of high-molecular-weight cytokeratin immunostains (or other immunostains) on previously stained H&E slides. The method described does not require destaining of H&E-stained sections, and it allows the preservation of the H&E stain on adjacent levels that may be present on the same slide. The method described requires that the original H&E-stained sections be placed on adhesive slides, but it has the advantages of eliminating the requirement of a paraffin block for immunostaining and eliminating the need for saving intervening unstained sections for possible immunohistochemical analysis.
authors.affiliation: Immunohistochemistry Division, ProPath Laboratory, Dallas, TX 75247, USA.
authors.forename: Patty
authors.initials: P
authors.lastname: Kubier
authors.forename: Rodney T
authors.initials: RT
authors.lastname: Miller
mesh_terms: D001707:Biopsy, Needle; D006801:Humans; D007150:Immunohistochemistry / Q000379:methods*; D007633:Keratins / Q000032:analysis; D008297:Male; D011467:Prostate / Q000737:chemistry / Q000166:cytology* / Q000473:pathology*; D011471:Prostatic Neoplasms / Q000737:chemistry / Q000473:pathology*; D013194:Staining and Labeling / Q000379:methods*
chemical_list: D007633:Keratins