Does Uniswap use 0x?

Could you elaborate on whether Uniswap utilizes the 0x protocol in its operations? I'm particularly interested in understanding the technical aspects of this integration, if any. Does Uniswap leverage 0x's open-source framework to facilitate peer-to-peer token swaps on the Ethereum blockchain? Or does it employ alternative mechanisms? Understanding this relationship could provide valuable insights into the workings of both Uniswap and 0x, as well as their respective roles in the decentralized finance ecosystem.