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Empty bladder. Coloured X-ray urogram of the human abdomen, showing an empty bladder after urination. Bones of the pelvis (lower frame) and lumbar spine (upper centre) are seen. At upper left are branched collecting ducts of a kidney. A tube-like ureter passes urine from this kidney to the bladder (at bottom) between the pelvic hip bones. The bladder is empty & compact. A urogram is made by injecting a substance opaque to X-rays into the blood. An X- ray is then taken after the kidneys have filtered this substance from the blood. P556/043 showing this bladder full before urination).
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