Primarily, the kidneys are responsible for the filtering and cleaning the blood.
At a stretch, you could include the lungs also, as they remove ("filter") carbon dioxide from the blood.
The Kidneys.
cleans and filters blood
The Kidneys.
it cleans and filters blood
cleans and filters blood
The liver filters the blood.
waste from bloodkidneyThe kidney filters waste from the blood.
liver
The kidney filters the blood of the frog.
The kidneys
the kidney IS the organ
The kidneys filter the blood.