Scheme 2From: A graphitic nano-onion/molybdenum disulfide nanosheet composite as a platform for HPV-associated cancer-detecting DNA biosensorsA schematic representation of the DNA-based electrochemical detection of HPV using the nano-onion/MoS2 nanosheet composite platform. ND, nanodiamond; NO, nano-onion; ss, single-strandBack to article page