Cultrex Basement Membrane Extract, Type 3, Pathclear, with Phenol Red

Basement Membrane Extract for xenograft and in vivo tumor modeling
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Cultrex Basement Membrane Extract, Type 3 (with Phenol Red)
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Product Details

Cultrex Basement Membrane Extract, Type 3, Pathclear, with Phenol Red Summary

Cultrex Basement Membrane Extract (BME), Type 3 is an extracellular matrix hydrogel that is qualified specifically for use in in vivo xenograft and tumorgraft models.

Key Benefits

• Ideal for xenograft and tumorgraft models
• Designed to mimic the in vivo matrix microenvironment
• Quality controlled for performance consistency

Why Use Cultrex BME, Type 3?

Cultrex Basement Membrane Extract (BME), Type 3 is a soluble form of basement membrane purified from Engelbreth-Holm-Swarm (EHS) tumor. This extract provides a natural extracellular matrix hydrogel that polymerizes at 37°C to form a reconstituted basement membrane. Cultrex BME, Type 3 provides a proprietary formulation that is physiologically aligned with the in vivo solid tumor environment and is recommended for xenografts and other in vivo applications. This extracellular matrix hydrogel is designed to help cells to adapt to in vivo transplantation. It mimics the in vivo microenvironment, including low glucose and low pH, to improve take rate and growth of implanted cells for xenograft and tumorgraft models.

Basement membranes are continuous sheets of specialized extracellular matrix that form an interface between endothelial, epithelial, muscle, or neuronal cells and their adjacent stroma and that play an essential role in tissue organization by influencing cell adhesion, migration, proliferation, and differentiation. The major components of BME include laminin, collagen IV, entactin, and heparin sulfate proteoglycans.

Kit Contents

• Cultrex Basement Membrane Extract (BME), Type 3
• Phenol Red


Murine Engelbreth-Holm-Swarm (EHS) tumor
Protein Concentration
8-12 mg/mL as determined by Lowry assay
Endotoxin Level
≤ 8 EU/mL by Limulus Amoebocyte Lysate (LAL) assay
Sterility Testing
No bacterial or fungal growth detected following 14 days in culture
Testing Cell Culture
Tumor Growth Assay - Cultrex BME, Type 3 supports proliferation and growth of breast cancer cells (MCF7) embedded in the matrix for minimum of 8 days.

Gelling Assay - Cultrex BME, Type 3 gels in less than 30 minutes at 37 °C, and maintains the gelled form in culture medium for a minimum of 7 days at 37 °C.
Viral Testing
Tested negative by PCR test for a total of 31 organisms and viruses, including: mycoplasma, 17 bacterial and virus strains typically included in mouse antibody production (MAP) testing, and 13 additional murine infectious agents including LDEV.
Product is stable for at least two years from date of manufacture when stored at ≤ -70 °C. See lot specific Certificate of Analysis for expiration date.
Shipping Conditions
The components for this kit may require different storage/shipping temperatures and may arrive in separate packaging. Upon receipt, store products immediately at the temperature recommended on the product labels.
Store the unopened product at -20 to -70 °C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.


For research use only. Not for diagnostic use.

Product Datasheets

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  1. Is it necessary to add the Phenol Red to the Cultrex Basement Membrane Extract, Type 3? What is the purpose of adding Phenol Red?

    • Addition of Phenol Red is optional. Phenol Red serves as a pH indicator.

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