Based on the information you have, tell us which cells of the human body are damaged by the SARS virus and how it endangers human life.

The structure of the SARS virus is simple, consisting of a protein outer shell and internal genetic material, and has no cellular structure. Viruses can only parasitize in living cells and rely on the genetic information stored in their own genetic material to use the materials in the cells to create new viruses. This is the life and reproduction of viruses. The SARS virus mainly damages human lung cells, causing breathing difficulties and death. Once a virus leaves a living cell, it no longer exhibits signs of life.

The SARS virus damages the human body’s respiratory tract cells and lung cells. The patient had difficulty breathing due to damage to lung cells, and the patient died due to respiratory failure.