Use "?" for one missing letter: pu?zle. Use "*" for any number of letters: p*zle. Or combine: cros?w*d
Select number of letters in the word, enter letters you have, and find words!
The rate of racemization (from L-forms to a mixture of L-forms and D-forms) has been used as a way of dating biological samples in tissues with slow rates of turnover, forensic samples, and fossils in geological deposits.  References ^ Brignole, Ed. — “Racemization - Wikipedia, the free encyclopedia”, en.wikipedia.org
The rate at which racemization proceeds depends upon the type of amino acid, average temperature, humidity, acidity, pH, and characteristics of the enclosing matrix. Also, D/L concentration thresholds appear to occur as sudden decreases in the rate of racemization. — “Amino acid dating - Wikipedia, the free encyclopedia”, en.wikipedia.org
This article is within the scope of WikiProject Chemistry, a collaborative effort to improve the coverage of chemistry on Wikipedia. Retrieved from "http://en.wikipedia.org/wiki/Talk:Racemization". — “Talk:Racemization - Wikipedia, the free encyclopedia”, en.wikipedia.org