Fig. 1From: Unlocking the secrets: the power of methylation-based cfDNA detection of tissue damage in organ systemsSources of cfDNA. A The release of cfDNA into body fluids originates from tissues and organs, including blood, cerebrospinal fluid, and urine, among others. B Injured tissues and organs release cfDNA with altered methylation patterns into the bloodstream, which can be detectedBack to article page