sketch ink human liver, hand drawn, doodle style, engraved anatomical .

anatomical anatomy aorta arteries bile biochemicals biological biology body care cartoon central cirrhosis decomposition detoxification dialysis digest digestion digestive disease doodle drawing drawn education engraving fibrinogen glycogen glycoprotein graphic hand health healthy hepatic hormone human icon illustration image internal isolated line liver medical medicine metabolism organ outline person physiology plasma portal production prothrombin science sketch stomach storage survival symbol synthesis system thrombopoietin tissue treatment vector vein white