E. coli Cloning Strains for Molecular Biology: What They Are and Why They Matter

by Pallabi Roy Chakravarty, Ph.D.

How Long Do Competent Cells Last?
Competent cells such as DH5a, DH10B, and BL21 will maintain their transformation efficiency for at least a year with proper storage. It is important to...
Why Did My Nickel Agarose Beads Lose Their Color?
Ni2+ ions give nickel agarose beads their characteristic blue color. This blue color can fade or disappear completely when loading his-tagged proteins onto the column....
Why Did My Nickel Agarose Beads Turn Black or Brown?
Nickel agarose beads change from blue to a brown or black color when the nickel ions have been reduced from a Ni2+ to a Ni1+...
Featuring the Coolest Floating Tube Rack Creations
The GoldBio Floating Tube Rack is one of our more clever giveaways because of the unique purpose it serves. And, with it also being one...