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.
Silver coloured high quality metal keyrings with a colourful dye-sublimation printed picture of a microscope image on one side that gives a durable and scratch resistant finish.
Keyrings measure 42x25mm (measured without including ring).
Supplied in a presentation box with a label describing the image.
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.
Please note these keyrings are printed to order so will be despatched within 4 working days of order being received.