Dear Editor:There is accumulating evidence that human blood electronic circuit components and their application circuits become more and more important to cyborg implant/engineering,man-machine interface,human disease detection and healing,and artificial brain evolution[1-5].Here,we report the first development of human plasma-based amplifier circuit in the discrete as well as integrated circuit(IC)configuration mode.Electrolytes in the human blood contain an enormous number of charge carriers such as positive and negative molecule/atom ions,which are electri- Dear Editor: There is accumulating evidence that human blood electronic circuit components and their application circuits become more and more important to cyborg implant / engineering, man-machine interface, human disease detection and healing, and artificial brain evolution [1-5]. Here , we report the first development of human plasma-based amplifier circuit in the discrete as well as integrated circuit (IC) configuration mode. Electrolytes in the human blood contain an enormous number of charge carriers such as positive and negative molecule / atom ions, which are electri-