Electron tomography of cryo-immobilized plant tissue: a novel approach to studying 3D macromolecular architecture of mature plant cell walls in situ. oleh Purbasha Sarkar, Elena Bosneaga, Edgar G Yap, Jyotirmoy Das, Wen-Ting Tsai, Angelo Cabal, Erica Neuhaus, Dolonchampa Maji, Shailabh Kumar, Michael Joo, Sergey Yakovlev, Roseann Csencsits, Zeyun Yu, Chandrajit Bajaj, Kenneth H Downing, Manfred Auer