Inside the living molecular system one should not further distinguish as to one or more active centers [ This statement boils down to : Inside the living molecular system one should not look for "active centers"], but : despite all evident and illustrative conjectures about unsymmetric localization and differentiations and the experimental results pointing to them, experimental results revealing especially sensitive regions of the protoplasm, the whole must, by reason of fundamental considerations, be taken as the single one active ["center"].