Pepsin Solution Products

Description

Fixation is one of the most critical aspects of immunostaining. If the antigen is not properly fixed it will be washed out of the specimen. On the other hand, over fixation can cause severe problems such as masking or denaturation of the antigen. Formaldehyde is probably the best all-around fixative, due to its cross-linking characteristics. Length of fixation is very critical to prevent antigen masking. Immunoglobulins are especially susceptible to over fixation with formalin. In such cases, treatment with proteolytic enzyme is required to digest excess aldehyde linkages and to expose the antigen.