Crystal structures of the Lac repressor, with and without isopropylthiogalactoside (IPTG), and the repressor bound to operator have provided a model for how the binding of the inducer reduces the ...

Over time, your body’s stores of hyaluronic acid decline. Age is one reason, but environmental factors — such as smoking and air pollution — also accelerate this process. That’s the bad news. The good ...

When you buy through our links, Business Insider may earn an affiliate commission. Learn more The right work bag does more than carry your laptop — it sets the tone for your entire outfit. On any ...