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348 results filtered with: Yellow
  • Phalaenopsis, Orchidaceae
  • Cortical bone mapping of hip from computed tomography (CT)
  • Pulsatilla vulgaris Mill. Ranunculaceae Pasque flower. Distribution: Europe. Lindley (1838) and Woodville (1790) knew this as Anemone pulsatilla, the common name being Pasque (Easter) Flower. At the end of the 18th century it was recommended for blindness, cataracts, syphilis, strokes and much more, treatments which, as was clear to physicians at the time, were valueless. Gerard (1633) writes: ‘They serve only for the adorning of gardens and garlands, being floures of great beauty’. It is in the buttercup family, Ranunculaceae, all members of which are poisonous. It was recommended, by mouth, for ‘obstinate case of taenia’ (tapeworms). One hopes it was more toxic to the worm than the patient. Flowers with a central disc and radiating florets were regarded as being good for eye complaints under the Doctrine of Signatures. Porta (1588) writes (translated): ‘Argemone [Papaver argemone], and anemone, have flowers of this shape, from this they cure ulcers and cloudiness of the cornea’. There were occupational diseases even before there were words like pneumoconiosis, and Lindley writes that ‘the powder of the root causes itching of the eyes, colic and vomiting, if in pulverising it the operator do not avoid the fine dust which is driven up.’ Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Cross-section through the optic vesicle (early eye), chick
  • Castration resistant prostate cancer, human tissue
  • Punica granatum L. Lythraceae Pomegranate, granatum malum, balustines. Distribution: E. Mediterranean to Himalayas. The Pomegranate is in the centre of the Arms of the Royal College of Physicians, perhaps for its use in cooling, and therefore for fevers. However it was the sour pomegranate that would have been used as Dioscorides says the sweet ones are unfit for use in agues. Culpeper (1650) makes no mention of the fruit, but says of the flowers ‘... they stop fluxes and the Terms in women.’ In the Complete Herbal and English Physician (1826) says the fruit ‘... has the same general qualities as other acid fruits.’ Of the flowers he says (among other properties) that ‘A strong infusion of these cures ulcers in the mouth and throat, and fastens loose teeth.’ Gerard (1633) says that the cravings of pregnant women can be abolished with the juice, and perhaps it was scurvy which was being treated effectively when he reports that the juice was very effective against splitting of blood and for loose teeth. The dwarf form of this species, Punica granatum var. nana has fruits no more than 3cm across. Pomegranate bark can only be sold by registered pharmacies in the UK and used to be used as a vermifuge, with the secondary use that the tincture made from it doubled as a permanent ink. In South Africa the fruit rind is used for diarrhoea and stomach ache, and the bark as a vermifuge, but undesirable side effects make this dangerous. It is reported to be effective against fevers, as a diuretic, to lower blood sugar and to be both antibacterial and antiviral (van Wyk, 2000). Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • HIV enzymes: reverse transcriptase, integrase, and protease
  • Illustration depicting semi-conservative DNA replication. A DNA double helix prior to replication is shown in the top left of the image. The sugar phosphate backbone and nucleotide bases are visible. Complementary base pairing of adenine with thymine (blue with green) and guanine with cytosine (red with yellow) is shown. During replication, a length of the double helix temporarily unwinds and separates into two strands. Free nucleotides bind by complementary base pairing to the recently exposed nucleotides on each strand which act as a template. Two new double helices are formed, each containing one original generation and one new generation strand of DNA. The sequence of base pairs in each double helix is identical to the original.
  • Xenoturbella, marine worm related to humans
  • Tragopogon pratensis L. Asteraceae. Goatsbeard, Salsify, Jack-go-to-bed-at-noon. Distribution: Europe and North America. This is the Tragopogion luteum or Yellow Goats-beard of Gerard (1633) who recommended them boiled until tender and then buttered as being more delicious than carrots and parsnips and very nutritious for those sick from a long lingering disease. Boiled in wine they were a cure for a 'stitch' in the side. In the USA children collect the milky sap onto a piece of glass and, when dry, chew it as bubble-gum. The name 'Jack-go-to-bed-at-noon' referes to the flowers which close at noon and the spherical radiation of seed plumules which then appear. Salsify is now applied as a name for T. porrifolius and Scorzonera hispanica. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Brown jumping spider (unknown species)
  • Mitochondria in Action
  • Robber fly (Asilidae)
  • Aluminium foil, LM
  • Nerves and Vessels of the Brachial Plexus
  • Petasites hybridus (L.)G.Gaertn., B.Mey. & Scherb. Asteraceae. Butterbur, Bog rhubarb. Distribution: Europe, NW Asia. Culpeper (1650) writes: “The roots are ... exceeding good in violent and pestilential fevers, they provoke the terms, expel poison, and kill worms.” Modern herbalists recommend it for a wide range of therapies, but it contains pyrrolizidine alkaloids, which are hepatotoxic and cause liver cancers. Nevertheless, in a trial aimed at reducing frequency of migraine attacks, a standardised commercial preparation was well tolerated, and was effective at higher doses, but placebo in this trial reduced migraines by over 50% in 49% of the patients (Neurology 2004
  • 'More to love' Adipose tissue
  • Knot in human blonde hair
  • Granadilla, axial view, MRI
  • Hair brain sculpture
  • Physiotherapy, artwork
  • Chamaemelum nobile (L.) All. Asteraceae. English, Roman or garden chamomile Distribution: Europe, Mediterranean. Culpeper (1650): “... assuage swellings, inflammations of the bowels, dissolve wind, are profitable given in clysters or drink, to such as are troubled with colic or [renal] stone.” The leaves are pleasantly fragrant, hence its use as a lawn plant, but also in aromatherapy. A ‘tea’ made from the flowers is apparently used to lighten hair colour. Chamomile contains sesquiterpene lactones, and these are known to possess allergenic properties. Hypersensitivity reactions have been reported in this and other members of the Compositae (Asteraceae) and cross sensitivity reactions may occur (Medicines Control Agency, 2002). Analgesic, and used for cramps and spasms (Quincy, 1718). Chamomile tea is used to help sleep, but may cause uterine contractions so avoid in pregnancy (US National Institutes of Health advice). Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Healthy brain, composite of tractography, MRI and artwork
  • Ribes odoratum H.L.Wendl Grossulariaceae Buffalo currant. Distribution: North America. Fruits edible. Presumably a source of vitamin C but no medicinal use. No reports of medicinal usage by Native Americans found. Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Counselling for social anxiety disorder, illustration
  • Cajal Neurons
  • Human brain cancer stem cells, SEM
  • Podophyllum peltatum (May apple or American mandrake)
  • Epimedium pubescens Maxim. Berberidaceae. Horny (sic) Goat Weed. Distribution: China. Marketed as an aphrodisiac, with the ability to act like sildenafil and for osteoporosis. Side effects reported include dizziness, dry mouth, vomiting and cardiac irregularity. It is not listed in Wiart (2006) or Wichtl (1994). Its reputation began, apparently, when a Chinese farmer observed increased sexual activity in his goats after they had been eating Epimedium. Given the enormous profits made by medicines such as sildenafil, it is indicative of its therapeutic value that it has not been taken up by a pharmaceutical company. Poor absorption from the gut and lack of information on toxicity may be responsible. It is not licensed for sale in the UK as a Traditional Herbal Remedy (Traditional Herbal Medicines Registration, January 2013) and has not been assessed or approved by the European Medicines Agency's Committee on Herbal Medicinal Products (HMPC). Photographed in the Medicinal Garden of the Royal College of Physicians, London.
  • Orchid flower (Phalaenopsis sp.)