A model of scar pathology tissue of a human body part caused by exposure to the Nagasaki atomic bomb was made and exhibited at the Nagasaki Atomic Bomb Museum. A keloid model of a Nagasaki atomic bomb survivor was made using a moulage.

    A model of scar pathology tissue of a human body part caused by exposure to the Nagasaki atomic bomb was made and exhibited at Nagasaki Atomic Bomb Museum. The model is a keloid pathology specimen of a burn wound from the right face to the neck. A model of keloidal tissue from a Nagasaki atomic bomb survivor was made using a moulage technique.

　　This is a model of a keloid pathology specimen of the right upper arm to forearm and fingers, with the wrist joint of the right hand extended and the fingers flexed and contracted. The Nagasaki Atomic Bomb Museum exhibited in the A-bombed section a melted glass bottle, a charred lunch box, a photo of a charred boy, a photo and model of keloid damage, and the reality of a piece of clothing with a piece of glass stuck in its back from the blast.

　The damage caused by the atomic bomb was the result of the combined effects of the blast, heat rays (radiant heat), and radiation, resulting in the appearance of extremely complex symptoms. In particular, 96.7% of those exposed within 1 km of the bomb died of burns and 96.9% of those exposed to trauma, and 94.1% of the uninjured survivors died. The early deaths from the atomic bombs were caused not only by burns and trauma, but also by the added damage of the intense radiation.

　The radiation from an atomic bomb penetrates the human body and destroys various cells. The degree of damage depends on the amount of radiation exposed. Of those exposed within 1 km of the hypocenter, the majority of survivors died, even if they were uninjured. The destructive power of radiation was intense on cells. The damage to the human body was not limited to the time of the explosion; radiation also damaged cells deep within the body. Over time, various symptoms developed from radiation damage. It caused cancer, leukemia, cataracts, and other diseases.

　Keloids were caused by an overgrowth of scar tissue that forms to repair the wound surface after a burn from an atomic bomb burst. It is a condition in which the skin surface is covered with irregular bumps that resemble the shell and legs of a crab. It began to appear around four months after the bombing and became most prominent between six months and one year and two months after the bombing. It was most common among those who were exposed to the bomb at a distance of approximately 2 km from the hypocenter.