Conclusion: Inverse relation between contraction and regeneration During adult healing, no contraction is observed following injury to epithelia or basement membrane Contraction is only observed following injury to stroma Contraction only observed following irreversible injuryConclusion: Inverse relation between contraction and regeneration • During adult healing, no contraction is observed following injury to epithelia or basement membrane. • Contraction is only observed following injury to stroma. • Contraction only observed following irreversible injury