Review
Copyright ©The Author(s) 2025.
World J Gastrointest Oncol. Aug 15, 2025; 17(8): 107412
Published online Aug 15, 2025. doi: 10.4251/wjgo.v17.i8.107412
Figure 1
Figure 1 Liquid biopsy performed by using blood/plasma samples. A: The bloodstream close to the tumor mass receives circulating tumor cells, extracellular vesicles, and free nucleic acids from the tumor; B: The main methods that have been used to analyze circulating free DNA in blood samples are real-time PCR, COLD-PCR, digital PCR, BEAMing, and next-generation sequencing. ctDNA: Circulating free DNA.