Each natural zinc finger recognizes a set of three letters, or bases, on the DNA molecule.
So far, its most useful feature is a set of nine "Letters to Bad Bosses".
To navigate through the phone's address book, a user touches the screen to produce a circular set of eight letters.
That finding meant a sharp turn for an investigation that until yesterday had been focused on a separate set of three letters, all postmarked from St . Petersburg Fla., and sent to NBC, to The New York Times and to The St . Petersburg Times
Last December, a set of four letters written during World War I by Nicholas II, the last czar of Russia, was sold in Geneva for a record 120,000 Swiss francs, or more than $125,000.
And in the end, those last set of twenty-six letters were unnecessary because my benefits capped my visits, with nothing to do with medical necessity.
Names were chosen such that they could be assembled from a fixed set of nine letters (a-e-i-c-h-n-r-s-t) on a customized response keyboard.
Each set of three letters on the chart becomes progressively lower in contrast relative to the chart background.
In this task participants saw five sets of four letters, and participants were required to induce a rule that applies to the composition and ordering of four of the five letter sets (Ekstrom, French, Harman, & Dermen, 1976).
At the same time, participants focused on a letter-detection task (find X in a circle of six letters).
Notice that double mutants, each denoted by a pair of letters, were produced except for those consisting of pairs from the same set of three adjacent letters.
