The bioMérieux FoodExpert-ID microarray, powered by Affymetrix GeneChip® technology,...
There are only four molecules, or "bases", in every DNA chain: adenine (A), guanine (G),...
Affymetrix microarrays use base pairing — a process known as hybridization — to...
The FoodExpert-ID Array works by identifying an animal's DNA to determine whether it is...
The first step is to build a short DNA strand — a probe — representing a unique...
Just as you can identify the "Star Spangled Banner" without hearing the entire song,...
The surface of the Affymetrix array is like a giant checkerboard, and each square holds...
Now that we have a probe designed to detect goose DNA, we have to extract DNA from our food...
After extracting DNA from our sample, we then amplify it to make millions of copies of every...
There are millions of copies of goose DNA probes (ATCATG) in a single square on the array....
If goose was present in the original foie gras, the sample being washed over the array...
Let's assume that we have a match and that goose RNA in our sample bound to the goose DNA...
1) That RNA present in our sample paired to the DNA probe on the array
If the DNA in the sample does not match a probe on the array, then most of the sample DNA...
If no sample RNA binds to the probes positioned in any given square, we will know the corresponding...
While the FoodExpert-ID Array can measure the absence or presence of 12 different species...
In reality, there are over 80,000 different probes used to detect 33 species of animals...
