Examlex
Some slaves actually used trains to escape to freedom in the North.
Urine
A liquid waste product filtered from the blood by the kidneys and expelled from the body through urination.
White Blood Cells
are cells of the immune system involved in protecting the body against both infectious disease and foreign invaders.
Pyelonephritis
A urinary tract infection that involves one or both of the kidneys.
Renal Ischemia
A condition characterized by inadequate blood flow to the kidneys, potentially leading to kidney damage or failure.
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