Modern DNA sequencing uses a 2D format on a glass slide to sequence hundreds of millions to billions of DNA fragments simultaneously, unlike older methods using small glass tubes.

“you know the older sequencers they had a small glass tube and as the DNA went through you sequenced it um it got converted into a 2d format kind of like a glass slide where you had tiny um fragments of DNA stuck to it you know um hundreds of millions then ultimately billions and then you sequenced all of them simultaneously”