Figure 10.

Ultrastructure of laticifers in the adult leaves of T. ventricosa. (a) Oblique section of a laticifer cell showing an acute apex and starch grains. (b) Lipid body closely associated with osmiophilic bodies. (c) Coalescence of small vacuole with granular laticifer cell content. (d) Osmiophilic bodies free in the cytosol and plastid with an electron-dense globule. (e) Presence of mitochondria, Golgi body and irregular thickening of cell walls. (f) Expansion of endoplasmic reticulum and presence of dictyosomes nearby the cell wall. Abbreviations: L = Laticifer, sg = starch grain, cwd = cell wall dissolution, sv = small vacuole, ob = osmiophilic bodies, p = plastid, gb = golgi body, mt = mitochondria, itw = irregular thickened walls, er = endoplasmic reticulum, dt = dictyosomes, cw = cell wall, lb = lipid body.