<Tr> <Td_colspan="2"> A human kidney (click on image for description). </Td> </Tr> <Tr> <Th> System </Th> <Td> Urinary </Td> </Tr> <Tr> <Th> Significant diseases </Th> <Td> Hypertension, Kidney cancer </Td> </Tr> <Tr> <Th> Significant tests </Th> <Td> Kidney biopsy, Urinalysis </Td> </Tr>

What is the name of a kidney specialist