dr. ventner has the sbrengs. believe that to get the maximum information you want that. >> let me ask you quickly. senator murray has emphasized the importance of making sure everyone or a representative group of everyone is included in this. what about children? i mean the suggestion was made this morning that sequencing the genome of a child for a genetic defect leading up to a particular disease can be less complicated than for an older person who may have a more complex disease. will you include children and the single gene therapy treatment as part of what you do? >> that is an active area of investigation by our working group. let me explain, we assembled a group of public and private experts on this whole question of of this million strong cohorts. they've met once last week and they're meeting again to talk about what should be the constitution of the cohort. should children be included. we want to be sure that covers diversity of the population as well. and some of the cohorts out there may not be as div

dr. ventner want to assemble a million. can you get those by going to the philadelphia children's hospital and using some of theirs? >> that's a great question. and we're trying to come up with every possible way to assemble this million strong cohort by taking advantage of things that have been already been done instead of having to start from scratch. and we will, in fact have a major meeting in your state on may 27, 28 with a number of those who have been managing these large scale cohorts gathering together to see if there is a way to put them together in a way that would prevent -- >> can can you estimate the number of genomes that have been sequenced? >> i should be clear. when you say genome sequencing, some people are referring to a sampling of the base pair. a genome type a snip chip is the term that's often used. some are talking about sequencing just the parts of the genome that code for protein, we call that the exome. to do a whole genome sequence is becoming quite affordable. most of the cohorts have not yet d