570 archaealproteins bacterialproteins cellcommunication cellinteraction celljunctions cellmembranes cellnuclei cells cellularreprogrammingtechniques cytoskeletalproteins cytoskeleton germcells inducedpluripotentstemcells intercellularjunctions laboratorymethods methods permeability physiology plasmodesmen prokaryotes prokaryoticcells qh573-671 transplantation we2200 we5340 zellkontakt