Paraffin Embedding Overview -

Posted June 6, 2019 by ImmunoStainingInfo

The tissues samples collected are usually submitted to regular pathologic analysis and then preceded through fixation and paraffin embedding.

Paraffin embedding is one of the standard procedures used in preparing slender sections of biological substance for histological assessment by light microscopy. There are major steps that are involved in paraffin embedding includes fixation, dehydration, transparentizing, immersion and embedding.

The tissues samples collected are usually submitted to regular pathologic analysis and then preceded through fixation and paraffin embedding. Fixation procedure is used to cross-link the antigens to well-built macromolecules, thereby immobilizing them in tissue.

Furthermore, paraffin embedding may have an effect on the immunoreactivity. For predictable histology, fixation of tissue, followed by paraffin embedding is the most widely-used method. It is criterion in the majority of histology laboratories, and is appropriate for assessing lymphoid tissue.

Here are the 5 steps described that are involved in paraffin embedding:

The main purpose of this process is to keep cell sharp and tissue in proper shape to prevent putridness, postmortem autolysis, endogenic and exogenic enzyme activity. Maintain the cell structure as well as position by preventing antigen diffusion. It gives color to clarify tissues by diverse affinity to coloring agent.

In this step the water is completely removed and creates a situation for the next step and hardens the tissue of curiosity. The dehydrating agents Ethanol and Acetone are completely miscible with water and can be arranged in different volumetric ratios.

The tissue of interest necessitates a transparentizing move for the reason that the dehydrating agent used in the above step is immiscible with the paraffin. The adding up of transparent reagent helps paraffin soak up into the tissue.

When the transparentizing process is completed, the tissue is then immersed in molten paraffin wax so that it takes up the wax-substituting transparent source. Based upon the melting temperature of paraffin wax, immersion should be implemented in between 54℃ to 64℃.

In embedding the process is carried of treating the tissue in a paraffin box so that the paraffin wax cools down plus solidifies. Once cooled, the tissue will be ready for sectioning and appropriate for storage.

About Boster Bio
As the leading Flow Cytometry Technical Resource Centers, Boster Bio was founded by Steven Xia, histologist, in the year 1993. The business currently provides hybridoma generation check to product custom monoclonal antibodies. For more information on Paraffin Embedded Tissue, please visit

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Boster Biological Technology
3942 Valley Ave
Pleasanton, CA 94566, USA
Email:[email protected]
Phone: (888) 466-3604
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Issued By Immuno Staining
Phone 8884663604
Business Address 3942 Valley Ave
Pleasanton, CA 94566, USA
Country United States
Categories Health
Tags Paraffin Embedding , Paraffin Embedded Tissue
Last Updated June 6, 2019