Biomaterial Database

A rapid and simplified technique for analysis of archival formalin-fixed, paraffin-embedded tissue by fluorescence in situ hybridization (FISH). 1996

I Köpf, and C Hanson, and U Delle, and I Verbiené, and A Weimarck

Department of Oncology, Göteborg University, Sweden.

We here present a simplification of the entire procedure for preparing formalin-fixed, paraffin-embedded tissue to be used for FISH-analysis. The steps for deparaffinisation and disintegration of the tissue to produce intact cell nuclei in a monodispersed suspension are detailed as well as the hybridisation steps. The procedure results in a clear cell suspension with intact cell nuclei and without clumped debris particles. The enzymatic digestion is restricted to the trypsinisation step of the deparaffinisation procedure. No further pretreatments prior to hybridization are performed. This modified technique has been successfully applied to different formalin-fixed, paraffin-embedded materials.

UI	MeSH Term	Description	Entries
D002467	Cell Nucleus	Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)	Cell Nuclei,Nuclei, Cell,Nucleus, Cell
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013048	Specimen Handling	Procedures for collecting, preserving, and transporting of specimens sufficiently stable to provide accurate and precise results suitable for clinical interpretation.	Specimen Collection,Collection, Specimen,Collections, Specimen,Handling, Specimen,Handlings, Specimen,Specimen Collections,Specimen Handlings
D016612	Paraffin Embedding	The infiltrating of tissue specimens with paraffin, as a supporting substance, to prepare for sectioning with a microtome.	Embedding, Paraffin
D017404	In Situ Hybridization, Fluorescence	A type of IN SITU HYBRIDIZATION in which target sequences are stained with fluorescent dye so their location and size can be determined using fluorescence microscopy. This staining is sufficiently distinct that the hybridization signal can be seen both in metaphase spreads and in interphase nuclei.	FISH Technique,Fluorescent in Situ Hybridization,Hybridization in Situ, Fluorescence,FISH Technic,Hybridization in Situ, Fluorescent,In Situ Hybridization, Fluorescent,FISH Technics,FISH Techniques,Technic, FISH,Technics, FISH,Technique, FISH,Techniques, FISH