About our free quality directory

DNA topoisomerase 1 is a topoisomerase enzyme that catalyzes ATP-independent breakage of single-stranded DNA, followed by passage and rejoining. It catalyzes reaction that leads to the conversion of one topological isomer of DNA to another.

The An-Najah video lectures are on a wide range of subjects including English, Chemistry, Physics, Biology, Math, Economics and Management.

This green blog from Chicago is dedicated to fight climate change and to inform its visitors of current environmental issues and challenges. You may subscribe to receive free site updates and news on latest green technology, products and politics.

Protocol directory is a protocol link directory, containing protocols, techniques and methods for molecular biology, botany and tissue research. Protocols for cell culture, bioinformatics, western blot, pcr, microarray, cloning, enzyme, RNA, DNA, protein, sequencing , transfection, transformation, electrophoresis and much more.

Dedicated website on cell culture, and tissue and organ culture. Links and information on antibiotics, antifungals, contamination and decontamination, cell cloning, counting, growth, harvesting, isolation, preparation, preservation and storage, cell culture media, techniques and cell lines.

Bio oil is usually used as co-incinerator with solid biomass, as co-incinerator with fossil fuels where a steam cycle produces green power, and bio-oil is also used in heaters to produce thermal energy.

Your source for links, methods and protocols on cell and tissue culture. Find information on cell cloning, counting, growth, harvesting, isolation, cell lines, preparation, preservation, storage, contamination, decontamination and growth media.

Find information and links on Cell Signaling Pathways, including Akt, Apoptosis, Cancer Pathways, Caspase, Cell Cycle, Cell Death Pathway, Cell Stress, Cyclic Nucleotides, Cytokines, Extracellular Matrix Pathways, and G Proteins.

Find links to protein expression systems, recombinant protein expression systems, protein expression in yeast and protein expression databases. More links also on recombinant proteins, protein extraction and protein purification and immunoprecipitation and protein interactions.

Find information, assays, links and protocols on the cell signalling molecules, Interleukins, which are part of the cytokine superfamily. Links on all 35 interleukins, interleukin assays, chemokine, cytokine, cytokine array, interferon and protocols are available.

Biology Disease is a web portal for human, animal and plant biology, microbiology, molecular biology and molecular biology protocols, and diseases. Resources, articles, links, protocols and images of biology and diseases are provided.

Custom Antibody Services provides information and links to custom monoclonal antibody and custom polyclonal antibody services, peptide synthesis, recombinant proteins, large scale antibody production and antibody suppliers and antibody software.

ScientifiQ is the place where scientists and just people with interest in science can ask and answer questions on any topic. The power of knowledge is to share - why not share your facts, opinions and personal experiences with the ScientifiQ community?

biology and medical related electronic textbooks, reviews, encyclopedias and references. biology and medical related journals and magazines. the most popular life sciences public databases containing exhaustive information for genes and proteins.

Kratom-name has a wealth of information about wholesale kratom, health benefits and how to overcome opiate addiction with the help of kratom.

Find information and links on SDS-PAGE, Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis, such as on principles, methods, techniques and protocols on staining, transfer, troubleshooting, 2-dimensional sds-page, buffer recipes, solution recipes, gels and agarose gel electrophoresis.

High Supplies sells fresh high quality cannabis seeds (Graine de Cannabis), carefully developed by its in-house Dutch cultivators.

Normal Histology provides information and images on human histology of the adrenal gland, kidney, bone, breast, colon, esophagus, heart, liver, lung, lymph node, pancreas, thyroid, placenta, prostate, skin, stomach, testis, uterus, cancer and more.

Bear Planet is unique and fabulous site that covers all aspects and attributes for all species of bears. Find everything about all eight living species of bears from their eating habits to anatomy to behavior.

Novus Biologicals are leading antibody suppliers with a large antibody catalogue. Our antibody database will cover all your antibodies requirements.