Extensive use is made of our human brain bank and our stock of human cell lines. (mcgeerandassociates.ca)
It also works in cells taken directly from human patients, which are usually much more difficult to manipulate than human cell lines grown specifically for lab research. (news.mit.edu)
In the rare human cell line used for this genetic screen, the cells have only one copy of each chromosome, except for chromosome 8, which has two copies. (wi.mit.edu)