11.   The pattern of gene activity can be quickly read by DNA chips.

12.   Zeneca has tested biosensors against known poisons to distinguish between patterns of safe gene activity and patterns that betray unacceptably high levels of toxicity.

13.   A computer program was then used to analyze the gene activity and to find a pattern unique to the specific types of leukemia.

14.   But he said that for the findings to be definitive, the researchers need to study gene activity in more tissues from all the species.

15.   The study also examined gene activity in the liver, brain and blood of orangutans, another type of ape like the chimp, and the rhesus macaques monkey.