11.   He gave each trip segment a flight number represented by a piece of DNA made of a particular sequence of those A, C, T and G molecules.

12.   However, the number of genes -- each a particular sequence of DNA -- has always been an estimate.

13.   One particular sequence in which bodies litter a street after a shell lands on a bread queue is particularly disquieting.

14.   The signals Blobel found are particular sequences of amino acids found either at one end of a protein or within it.

15.   Using developed molecular biological techniques, the researchers observed particular DNA sequences in people affected by the sarcoma or the Artificial Immuno-Deficiency Syndrome or both.