The lower layer of cells (the epidermis) was stripped from a lily leaf (with a steady hand!) and stained with Toluidine Blue. By viewing the stained epidermis using a polarised light microscope, the different cells present can be seen, including the guard cells which surround the stomata (mouth like structures which allow gaseous diffusion across the normally impermeable epidermis). The guard cells stain a slightly different colour due to the difference in the chemical structure of the cell walls.
90mm square coasters printed by dye sublimation to give a vibrant, high gloss, scratch resistant finish.
Supplied with a description on the back of the coaster.
Buyany four coasters for £14orany six for £20 – just order the 4 or 6 coaster listings and put the numbers of the coasters you want into the text box. Mix them up for variety or get a matching set – whichever you want.
Free UK delivery on orders over £10 (£1 delivery charge for orders below £10).
Delivery charges for overseas orders are calculated in the shopping basket.
Orders are normally sent out within 2 working days.