A biological matrix begins as animal or human tissue and ends as a sterile, implantable scaffold. What happens in between — decellularisation and sterilisation — largely determines how the material performs. This article explains the process in general terms; it is educational, not clinical guidance.
Why processing matters
The aim of processing a biological matrix is to remove the things that would provoke rejection while preserving the collagen architecture the body needs in order to repopulate the scaffold. Do too little and immunogenic material remains; do too much or too aggressively and the useful structure is damaged. The balance is the craft.
Decellularisation
Decellularisation removes the donor cells and cellular debris from the tissue, leaving the extracellular matrix behind. Different methods — physical, chemical and enzymatic — are used in combination. A well-decellularised scaffold retains its organised collagen and, ideally, cues that support cell in-growth and revascularisation.
Sterilisation and cleanliness
Terminal sterilisation reduces infection risk, but the method chosen can also affect the scaffold’s properties, so manufacturers must protect the collagen while achieving sterility. Biological cleanliness — low residual DNA and contaminants — is a quality signal worth asking about.
Consistency as an outcome of process
Because manufactured xenografts such as bovine pericardium are made to specification, good process control can yield reliable batch-to-batch behaviour — an underrated advantage on the operating table. Products like ExaShape are engineered with this consistency in mind.
The bottom line
Processing a biological matrix means removing cells and contaminants while preserving collagen structure, then sterilising without degrading it. The result determines integration, safety and consistency. To see what integration then looks like inside the body, read how a biological matrix integrates.
This article is general educational information, not clinical guidance. Refer to device instructions for use and current evidence.
Important information This article is general education, not medical advice. Tap to read the full medical, regulatory & legal notice.
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Last reviewed: July 24, 2026.
