One example of this ex vivo technique is the isolated perfused porcine flap. Thus, when tissue is adequately perfused, migration and proliferation of endothelial cells is reduced. Normally perfused kidneys produce a proportionate amount of a substance called renin. Most neuroanatomical substrates for facial processing are perfused by the middle cerebral artery (MCA). Only perfused beats that generate an arterial waveform are counted for in HR. Normal cells may be exposed to hyperkalaemia; abnormal cells may be perfused by normal environment. The gamma camera is placed on the abdomen to picture these perfused organs. As the brain requires nutrient entry and waste removal, it is perfused by blood flow. It is reversible process of moving drug of sites of highly perfused to systemic circulation,FMAS. The fluid is perfused for 60 to 120 minutes and then drained. Double domes of various shapes abound, and the outsides are perfused with brilliant colors.