Another week has passed, but one and a half of the original parent leaves in Tank 6 refuse to die.  Root and new-vine growth continues as well.  Whereas total root length per plant still remains at 7 cm in Tanks 1 and 2, it has increased to 91 cm in Tanks 3 and 4 and 118 cm in Tanks 5 and 6, up from 76 and 102 cm, respectively, four weeks ago.