Conservation-restoration of the Shroud of Turin

[7] During the 2002 restoration, conducted by the Commission for the Conservation of the Shroud between 20 June and 22 July, thirty triangular patches, sewn by nuns in 1534, as well as the Holland cloth, were removed.

[9] As the minor changes of temperature can enhance the pressure, humidity and mechanical stress, the Shroud's case was made climate-controlled.

An electron microscope investigation of the dust and pollens removed from the Shroud during the 1978 examination has revealed that some species of mites are resident on the cloth.

[9] As the Shroud was rolled and unrolled for display throughout the centuries, it sustained a repeated abrasion of the charred edges to the areas holed in the fire.

American researcher Alan D. Adler, confirming the presence of bilirubin on the fabric, noted that it is not light-stable and may change the color under any light.