Answer: glomeruli

AnswerCrossword Clue
glomerulicompact cluster of capillaries
glomeruliGLOMERULUS, the bunch of looped capillary blood vessels in a Malpighian capsule of the kidney
glomerulituft of convoluted capillaries in the nephron of a kidney, functioning to remove certain substances from the blood before it flows into the convoluted tubule