Red blood cell cast from the urinary sediment of a patient with chronic glomerulonephritis. The cast looks red because of the hemoglobin of the cells inside. Unstained, X200.
Red blood cell cast from the urinary sediment of the preceding patient. The matrix of the cast is waxy, but the red blood cells inside can be seen clearly. Unstained, X200.
Red blood cell cast from the urinary sediment of another patient with chronic glomerulonephritis. The matrix looks granular, but a part of the cast looks red because of hemoglobin inside. Unstained, X200.
Red blood cell cast from the urinary sediment of the preceding patient. The red blood cells in the cast are granular and yellow. Unstained, X200.