Polarised light micrograph of tissue from a Parthenocissus sp. plant showing calcium oxalate crystals (rods), or raphides, in the cell cytoplasm. Calcium oxalate crystals are common in the stems and leaves of many plants; they have no known metabolic function other than to serve as a means of disposal of excess calcium in the plant. Dark field illumination. Magnification: x550 when printed at 10 centimetres wide. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Mis, Marek |
Taille de l’image : | 4830 px × 7237 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |