Primary antibodies are employed in various applications, e.g. immunohistochemistry and immunofluorescence staining, ELISAs and Western blotting. Primary antibodies can be monoclonal or polyclonal. Monoclonal antibodies possess a very high specificity for their antigen, which reduces false positive signals such as high background staining in tissues. Polyclonal antibodies are used when it depends on the highest possible sensitivity. Primary antibodies are available either unconjugated or conjugated to HRP, AP, gold, or various fluorochromes. Unconjugated antibodies are suitable for any method of your choice. In this way you can use the same reliable antibody in several different methods, e.g. in immunohistochemistry and in ELISAs. Conjugated antibodies are very useful if you require a reliable method for co-staining of several different antigens in the same probe. On antibodies-online you will find more than 270,000 reliable primary antibodies of high quality. Finding a good antibody has never been easier. Simply enter the antigen of your choice in the search box and refine the search results by applying the intelligent filter functions. The range of antibodies-online provides a huge variety of reactivities in antibodies. With antibodies-online you will find the right antibody for your research while saving time and money.