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TissueFab® GelAlg − LAP Bioink

low endotoxin, 0.2 μm filtered, suitable for 3D bioprinting applications

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GelMA-alginate bioink

Quality Level


0.2 μm filtered


viscous liquid (gel)


<5 cfu/mL Bioburden
<50 EU/mL Endotoxin


pale yellow to colorless




10-40 cP


3D bioprinting

storage temp.


Related Categories

General description

Gelatin methacryloyl (GelMA) is a polymerizable hydrogel material derived from natural extracellular matrix (ECM) components. Due to its low cost, abundance, and retention of natural cell-binding motifs, gelatin has become a highly sought material for tissue engineering applications.

Alginate is a naturally occurring polymer widely applied for bioprinting applications as its printability can be easily modified by altering the polymer density and crosslinking with the addition of calcium chloride (CaCl2). Alginate is often combined with gelatin to facilitate cell adhesion and differentiation.

Temporal and spatial control of the crosslinking reaction can be obtained by adjusting the degree of functionalization and polymerization conditions, allowing for the fabrication of hydrogels with unique patterns, 3D structures, and morphologies.


Gelatin methacrylate based bioinks have been used in the following bioprinting applications:

  • osteogenic [1],
  • chondrogenic [2] [3],
  • hepatic [4] [5] [6],
  • adipogenic [7],
  • vasculogenic [8],
  • epithelial [6],
  • endothelial [9] [10],
  • cardiac valve [11],
  • skin [12],
  • tumors [10]

Features and Benefits

  • Ready-to-use formulation optimized for high printing fidelity and cell viability, eliminating the lengthy bioink formulation development process
  • Step-by-step protocols developed and tested by MilliporeSigma 3D Bioprinting Scientists, no prior 3D bioprinting experience needed
  • Suitable for different extrusion-based 3D bioprinter model
  • Methacrylamide functional group can also be used to control the hydrogel physical parameters such as pore size, degradation rate, and swell ratio.

Legal Information

TISSUEFAB is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

10 - Combustible liquids



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Liliang Ouyang et al.
Biofabrication, 8(3), 035020-035020 (2016-09-17)
3D cell printing is an emerging technology for fabricating complex cell-laden constructs with precise and pre-designed geometry, structure and composition to overcome the limitations of 2D cell culture and conventional tissue engineering scaffold technology. This technology enables spatial manipulation of
Wanjun Liu et al.
Advanced healthcare materials, 6(12) (2017-05-04)
Bioprinting is an emerging technique for the fabrication of 3D cell-laden constructs. However, the progress for generating a 3D complex physiological microenvironment has been hampered by a lack of advanced cell-responsive bioinks that enable bioprinting with high structural fidelity, particularly
B Duan et al.
Acta biomaterialia, 10(5), 1836-1846 (2013-12-18)
Tissue engineering has great potential to provide a functional de novo living valve replacement, capable of integration with host tissue and growth. Among various valve conduit fabrication techniques, three-dimensional (3-D) bioprinting enables deposition of cells and hydrogels into 3-D constructs
Weitao Jia et al.
Biomaterials, 106, 58-68 (2016-08-24)
Despite the significant technological advancement in tissue engineering, challenges still exist towards the development of complex and fully functional tissue constructs that mimic their natural counterparts. To address these challenges, bioprinting has emerged as an enabling technology to create highly
Birgit Huber et al.
Journal of biomaterials applications, 30(6), 699-710 (2015-05-29)
In vitro engineering of autologous fatty tissue constructs is still a major challenge for the treatment of congenital deformities, tumor resections or high-graded burns. In this study, we evaluated the suitability of photo-crosslinkable methacrylated gelatin (GM) and mature adipocytes as components


Learn how 3D bioprinting is revolutionizing drug discovery with highly-controllable cell co-culture, printable biomaterials, and its potential to simulate tissues and organs. This review paper also compares 3D bioprinting to other advanced biomimetic techniques such as organoids and organ chips.

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