" ▁and ▁mentioned ▁in ▁the ▁ 1 2 th ▁century ▁Hung arian ▁P ray ▁Code x , ▁have ▁remained . ▁The ▁ 2 0 0 2 ▁rest oration ▁has ▁been ▁critic ized ▁as ▁causing ▁damage ▁to ▁the ▁S hr oud . ▁ ▁Natural ▁ha z ards ▁Because ▁of ▁de h yd r ation , ▁which ▁might ▁have ▁been ▁involved ▁in ▁the ▁image ▁formation , ▁the ▁S hr oud ▁was ▁not ▁recommended ▁to ▁be ▁stored ▁in ▁vac u um . ▁As ▁the ▁minor ▁changes ▁of ▁temperature ▁can ▁enh ance ▁the ▁pressure , ▁hum id ity ▁and ▁mechanical ▁stress , ▁the ▁S hr oud ' s ▁case ▁was ▁made ▁climate - control led . ▁ ▁An ▁electron ▁mic ros cope ▁investigation ▁of ▁the ▁dust ▁and ▁poll ens ▁removed ▁from ▁the ▁S hr oud ▁during ▁the ▁ 1 9 7 8 ▁exam ination ▁has ▁revealed ▁that ▁some ▁species ▁of ▁mit es ▁are ▁resident ▁on ▁the ▁cloth . ▁L ichen oth elia ▁and ▁ara chn ids ▁in ▁one ▁of ▁the ▁t ape ▁samples ▁have ▁been ▁also ▁observed . ▁▁ ▁As ▁the ▁S hr oud ▁was ▁rolled ▁and ▁un rolled ▁for ▁display ▁throughout ▁the ▁centuries , ▁it ▁sust ained ▁a ▁repeated ▁ab ras ion ▁of ▁the ▁char red ▁edges ▁to ▁the ▁areas ▁ho led ▁in ▁the ▁fire . ▁The ▁low ▁magn ification ▁images ▁of ▁the ▁blood ▁areas ▁already ▁show ▁an ▁extensive ▁ab ras ion ▁of ▁this ▁type . ▁To ▁reduce ▁the ▁stress ▁of ▁gravity ▁the ▁S hr oud ▁was ▁suggested ▁being ▁in ▁horizontal ▁display . ▁To ▁minim ize