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  • Cell biology. Variations on a theme endothelial reticulum
  • Small blood vessel - endothelial cells & RBC
  • Blood vessels in the retina showing the endothelial cells in red and the vascular contents in green. Surrounding cell nuclei are stained blue.
  • Human small intestine showing villi. The cytokeratinin the cells is stained blue, the cell nuclei are stained red and the endothelial cells lining the blood vessels are stained green.
  • Human small intestine showing villi and glands. The cytokeratinin the cells is stained blue, the cell nuclei are stained red and the endothelial cells lining the blood vessels are stained green.
  • Human small intestine showing villi and glands. The cytokeratinin the cells is stained blue, the cell nuclei are stained red and the endothelial cells lining the blood vessels are stained green.
  • Human small intestine showing the columnar epithelium. The cytokeratinin the cells is stained blue, the cell nuclei are stained red and the endothelial cells lining the blood vessels are stained green.
  • Human small intestine showing villi and glands. The cytokeratinin the cells is stained blue, the cell nuclei are stained red and the endothelial cells lining the blood vessels are stained green.
  • Human small intestine showing villi and glands. The cytokeratin in the cells is stained blue, the cell nuclei are stained red and the endothelial cells lining the blood vessels are stained green.
  • Chloroplasts in a plant cell, in this case a spinach leaf. Inside the chloroplasts, the stacks of thylakoid membranes are where the action takes place. The dark spots are starch granules. In close proximity are the mitochondria, with curved membranes, and the endothelial reticulum. This system of membranes navigates between the energy producing organelles until it reaches the nucleus, where it also forms the nuclear membranes.
  • Taxus baccata L. Taxaceae European Yew. Trees are feminine in Latin, so while Taxus has a masculine ending (-us), its specific name, baccata (meaning 'having fleshy berries' (Stearn, 1994)), agrees with it in gender by having a female ending ( -a). Distribution: Europe. Although regarded as poisonous since Theophrastus, Gerard and his school friends used to eat the red berries (they are technically called 'arils') without harm. Johnson clearly ate the fleshy arils and spat out the seed, which is as poisonous as the leaves. It is a source of taxol, an important chemotherapeutic agent for breast and other cancers. It was first extracted from the bark of T. brevifolia, the Pacific yew tree, in 1966. About 1,100 kg of bark produces 10 g of taxol, and 360,000 trees a year would have been required for the needs of the USA – an unsustainable amount. In 1990 a precursor of taxol was extracted from the needles of the European yew so saving the Pacific trees. It is now produced in fermentation tanks from cell cultures of Taxus. Curiously, there is a fungus, Nodulisporium sylviforme, which lives on the yew tree, that also produces taxol. Because taxol stops cell division, it is also used in the stents that are inserted to keep coronary arteries open. Here it inhibits – in a different way, but like anti-fouling paint on the bottom of ships – the overgrowth of endothelial cells that would otherwise eventually block the tube. The economic costs of anticancer drugs are significant. Paclitaxel ‘Taxol’ for breast cancer costs (2012) £246 every 3 weeks
  • TEM of capillary
  • Cell death around scleral blood vessels
  • Parasites of the tropical diseases kala-azar and oriental sore. Colour photomechanical reproduction of a drawing by A.J.E. Terzi, ca 1921.
  • Capllary in the corneal stroma
  • Capillary with red blood cells
  • Longitudinal section of a small blood vessel
  • Endothelium Reticulum
  • March of the VEGF-B(10-108)-VEGFR-1D2 molecules
  • Lymph node: Kaposi's sarcoma
  • Neurovascular unit, blood brain barrier, TEM
  • Skin: Kaposi's sarcoma
  • Fungal infection after corneal graft
  • Rat carotid artery
  • Fungal hyphae in the eye - TEM
  • Blood vessels emerging from the optic disc
  • Diffuse lepromatous leprosy: Lucio phenomenon
  • Capillary in the corneal stroma
  • Occluded episcleral capillary
  • Occluded capillary