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Home >  Technical Reference Technical Reference Product Technical Information Restriction Endonucleases Polymerases and Amplification Technologies DNA Modifying Enzymes and Cloning Technologies Sample Preparation for Next Generation Sequencing Markers and Ladders (DNA, RNA & Protein) RNA Reagents Gene Expression and Cellular Analysis Protein Expression and Purification Technologies Competent Cells Protein Tools Discontinued Products DNA Sequences and Maps Plasmid vectors, viral DNA, and bacteriophage. General Molecular Biology Data Material Safety Data Sheets (MSDS) Product Manuals and Application Notes Product FAQs and Protocols Expiration Dating Policy Literature NEB Expressions A scientific update from NEB. Publications  by NEB scientists. Molecular Biology Databases And Online Tools NEB Online Tools—We offer a variety of interactive web tools here, and on our free iPhone app, DNA Tools. These tools can help you select a product and plan your experiments. The Restriction Enzyme Database (REBASE)—Contains a complete listing of all known restriction endonucleases, including: recognition sequences, methylation sensitivity, commercial availability and references. InBase, The New England Biolabs Intein Database—Inteins are self-splicing proteins that can also act as homing endonucleases and mediate DNA cleavage at the intein insertion site in inteinless alleles. FilGenNet—The Filarial Genome Network is an international initiative to coordinate genome research on the filarial nematode parasites of humans. Additional Molecular Biology Databases—A wide variety of Molecular Biology Databases containing useful compilations of sequence and other information.