47 results filtered with: Digital Images
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Pulsatilla vulgaris + Bombylius major
Dr Henry Oakeley- Digital Images
- Online
Risk factor for trachoma transmission: flies on boy's face
H Kuper- Digital Images
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Trachoma: health promotion banner in Vietnam
H Kuper- Digital Images
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Livestock and trachoma control
H Kuper- Digital Images
- Online
Cellular architecture of normal human skin imaged by whole mount tissue microscopy. Human skin has a rich network of white blood cells (specifically dendritic cells, T cells and macrophages) which form sheaths around blood vessels. This image was taken less than 20 micrometres beneath the junction that joins the dermal and epidermal layers of the skin (dermo-epidermal junction). At this level, dendritic cells (stained for CD11c; green) form clusters around and between blood capillary loops (stained for CD31; red). The blind-ended tips of initial lymphatic vessels are just visible (stained for LYVE-1; blue) at this level. This normal cellular architecture is grossly disrupted in diseased skin (see related images). Scale bar (white) represents 200 micrometres.
Dr. Xiao-nong Wang, Human Dendritic Cell Laboratory, Newcastle University- Digital Images
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Coloboma
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Catharanthus roseus (L.)G.Don Apocynaceae. Madagascar Periwinkle Distribution: Madagascar. It is the source of vincristine and vinblastine, which impair cell multiplication by interfering with microtubule assembly, causing metaphase arrest and are effective medications for leukaemias, lymphomas and some solid tumours. The mortality from childhood leukaemia fell from 100% to 30% once it was introduced - not a drug that could ethically be tested by double-blind trials. These chemicals were initially discovered by investigators in 1958 who were looking for cures for diabetes so tested this plant which was being used in the West Indies to reduce blood sugar levels. There are 70 different alkaloids present in this plant, and some - catharanthine, leurosine sulphate, lochnerine, tetrahydroalstonine, vindoline and vindolinine - lower blood sugar levels. However, the toxicity of this plant is such that this is not a plant to try at home for diabetic management. The vincristine content of the plant is 0.0003%, so two kilograms of leaf are required to produce sufficient vincristine for a single course of treatment for a child (6gm). Fortunately it is a vigorous weed and easy to grow in the tropics. Artificial synthesis has now been achieved. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
Dr Henry Oakeley- Digital Images
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Sight replaced by touch.
- Digital Images
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Retinal non-attachment in a dog
P Bedford/RVC- Digital Images
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Cavefish embryo
Monica Folgueira & Steve Wilson- Digital Images
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Black fly, anterior view
Macroscopic Solutions- Digital Images
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Black fly, lateral view
Macroscopic Solutions- Digital Images
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Egyptian wall relief, taken 1989
Carole Reeves- Digital Images
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Egyptian wall relief, taken 1989
Carole Reeves- Digital Images
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Egyptian wall relief, taken 1989
Carole Reeves- Digital Images
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Patau's syndrome karyotype 47,XY,+13
Wessex Reg. Genetics Centre- Digital Images
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Girl showing the effects of congenital syphilis
Godart, Thomas- Digital Images
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Trahcoma: visual acuity test
H Kuper- Digital Images
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Surgery: bilamellar tarsal rotation procedure for trichiasis
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Mirror symmetric image of cavefish embryo
Monica Folgueira & Steve Wilson- Digital Images
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Frontal view of cavefish and zebrafish embryos
Monica Folgueira & Steve Wilson- Digital Images
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Paeonia officinalis (Peony)
Dr Henry Oakeley