Fig. 10 Transmission electron micrographs of horizontal sections ingrown current-year stems. a A laticiferous cell accumulating transpolyisoprenein its cytoplasm. b Magnified image of a trans-polyisoprenegranule in the phloem. c The trans-polyisoprene granules werefused to each other. Tp trans-polyisoprene, Cw cell wall, La laticifer.Scale bars are 1 μm (a) 100 nm (b) 200 nm (c)