Collagenase type I ยี่ห้อ Sigma

คำอธิบาย

General description

Collagenase type I (from Clostridium histolyticum) is a crude collagenase preparation that can be used for the isolation of primary cells or for tissue dissociation by enzymatic means. The preparation also may contain caseinase, clostripain, and tryptic activities. This preparation can be used to dissociate cells in culture, and has been successfully used to passage human embryonic stem cells cultured with Millipore’s HEScGROTM Animal Component-Free Medium.

Packaging

1 vial containing 250mg of lyophilized powder

Quality

Each lot of collagenase type I is assayed via a modification of Mandl (1964), with the extent of collagen breakdown determined using the colorimetric ninhydrin method of Moore and Stein (1948). Each lot is then tested for successful passage of human embryonic stem cells cultured in Millipore′s HEScGRO Medium for hES cells. Cells are characterized for correct marker expression and morphology after five passages.

Physical form

Collagenase type I is supplied as a dialyzed, lyophilized powder.

Storage and Stability

Collagenase type I should be stored in its powdered form at 2-8oC until ready to use. Solutions of collagenase type I can be aliquotted and stored at -20oC, but should not be repeatedly thawed and re-frozen.

Legal Information

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

Disclaimer

RESEARCH USE ONLY. This product is regulated in France when intended to be used for scientific purposes, including for import and export activities (Article L 1211-1 paragraph 2 of the Public Health Code). The purchaser (i.e. enduser) is required to obtain an import authorization from the France Ministry of Research referred in the Article L1245-5-1 II. of Public Health Code. By ordering this product, you are confirming that you have obtained the proper import authorization.