▁under ▁t issue ▁stress , ▁its ▁protect ive ▁function ▁may ▁be ▁carried ▁out ▁both ▁the ▁“ pass ive ” ▁and ▁“ active ” ▁C UR D - indu ced ▁mechan isms . ▁Thus , ▁the ▁cell ▁stress ▁mechanism ▁is ▁just ▁one ▁of ▁the ▁two ▁instruments ▁with ▁which ▁T AS ▁protect s ▁the ▁cells ▁of ▁hom olog ous ▁t issue . ▁The ▁third ▁difference ▁between ▁t issue ▁and ▁cell ▁str esses ▁lies ▁in ▁ability ▁of ▁the ▁former ▁not ▁only ▁to ▁increase ▁but ▁also ▁to ▁decrease ▁the ▁un specific ▁resistance ▁of ▁the ▁cells . ▁Meanwhile , ▁the ▁cell ▁stress ▁concept ▁cons iders ▁only ▁the ▁first ▁possibility . ▁ ▁At ▁the ▁present ▁moment , ▁two ▁phys i ological ▁functions ▁of ▁t issue ▁stress , ▁which ▁are ▁realized ▁in ▁the ▁process ▁of ▁participation ▁of ▁its ▁adapt ive ▁mechanism , ▁can ▁be ▁considered . ▁One ▁of ▁them ▁is ▁expressed ▁in ▁an ▁increase ▁of ▁cell ▁special ized ▁functions ▁stability ▁in ▁the ▁conditions ▁of ▁prolong ed ▁functional ▁load . ▁Another ▁t issue ▁stress ▁function ▁is ▁to ▁reg ulate ▁hom olog ous ▁t issue ▁cell ▁mass ▁in ▁various ▁phys i ological ▁conditions . ▁ ▁T issue ▁stress ▁function ▁on ▁hom olog ous ▁t issue ▁cells ▁special ized ▁functions ▁stability ▁improvement ▁It ▁is ▁well ▁known ▁that ▁only ▁some ▁part ▁of ▁t issue ▁functional ▁units ▁particip ate ▁in ▁its ▁cells ▁special ized ▁functions ▁real ization ▁( Bar cro ft , ▁ 1 9 3 7 ). ▁Because ▁of ▁univers ality ▁of ▁this ▁phenomen on ▁it ▁was ▁named ▁“ the ▁law ▁of ▁inter mitt