Light micrograph of protoplasts from a tobacco leaf,Nicotiana plumbaginifolia,showing two different cell types,epidermal (colourless) & mesophyll (green). A protoplast is a single intact cell,which has been chemically treated to remove the tough outer cellulose wall,leaving only the delicate plasma membrane binding the cell contents into a whole. The cell wall can later be regrown. The epidermal cells,a layer at the surface,protect the leaf from external damage. The mesophyll,a layer beneath,contain numerous chloroplasts,sites of photosynthesis. Protoplast cells,being easier to manipulate,are used in plant genetic experimentation. Mag: X125 (35mm) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
Taille de l’image : | 5431 px × 3563 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |