CT scans are expensive, however, and many patients suspected of having traumatic brain injuries do not exhibit signs of visible damage when scanned. (scientificamerican.com)
Yes, you must replace your car seat and base if it has been involved in a vehicle crash, even if you can't see visible damage. (chiccousa.com)
He did not himself suffer visible damage from the chemicals, but his first son was later born with a toe missing from his left foot. (newscientist.com)