Fluorescence in situ hybridization, commonly referred to as FISH, is a powerful macromolecule recognition technology harnessing the complementary properties of DNA or RNA strands. This technique has transformed the study of chromosomes, especially by providing options that do not necessitate actively dividing cells. Such flexibility is particularly advantageous in identifying and characterizing cytogenetic abnormalities, making FISH a prominent tool in modern molecular biology.
The Significance of FISH in Research
FISH, along with related techniques like in situ hybridization (ISH), enriches genomic information and complements methodologies such as quantitative PCR (qPCR), digital droplet PCR (ddPCR), next-generation sequencing (NGS), and NanoString technologies. Initially developed for physical mapping to delineate genes on chromosomes, FISH offers high analytical resolution and sensitivity, allowing for immediate applications in genetic diagnoses, including common aneuploidies, microdeletions, and microduplication syndromes.
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