FLO4992519: Santonica or wormseed, Artemisia cina. Chromolithograph after a botanical illustration by Walther Muller from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4992612: Wild lettuce or bitter lettuce, Lactuca virosa. Chromolithograph after a botanical illustration by Walther Muller from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4985200: Culver's root or blackroot, Veronicastrum virginicum (Veronica virginica). Handcoloured lithograph by Hanhart after a botanical illustration by David Blair from Robert Bentley and Henry Trimen's Medicinal Plants, London, 1880. / Bridgeman Images

FLO4985435: Butternut, white walnut or oil-nut, Juglans cinerea. Handcoloured lithograph by Hanhart after a botanical illustration by David Blair from Robert Bentley and Henry Trimen's Medicinal Plants, London, 1880. / Bridgeman Images

FLO4983415: Indian tobacco, Lobelia inflata. Handcoloured lithograph by Hanhart after a botanical illustration by David Blair from Robert Bentley and Henry Trimen's Medicinal Plants, London, 1880. / Bridgeman Images

FLO4983508: Indian ipecacuanha or unta mool, Tylophora asthmatica. Handcoloured lithograph by Hanhart after a botanical illustration by David Blair from Robert Bentley and Henry Trimen's Medicinal Plants, London, 1880. / Bridgeman Images

FLO4990629: Spiny restharrow, Ononis spinosa. Chromolithograph after a botanical illustration from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4990664: Tolu balsam, Myroxylon balsamum (Toluifera balsamum). Chromolithograph after a botanical illustration from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4995097: Mayapple or American mandrake, Podophyllum peltatum. Chromolithograph after a botanical illustration by Walther Muller from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4985462: Black oak, yellow-barked oak or querlemon, Quercus velutina (Quercus tinctoria). Handcoloured lithograph by Hanhart after a botanical illustration by David Blair from Robert Bentley and Henry Trimen's Medicinal Plants, London, 1880. / Bridgeman Images

SZT6313850: Surgical team, 1958 (b/w photo) / Bridgeman Images

LLM6020719: Good King Henry, Henbane, Black Horehound, Haresfoot, Least Houseleek, Honeywort (colour litho), English School, (19th century) / Private Collection / Bridgeman Images

LLM6020694: Fox Glove, Granesbill, Great Cetandine, Coltsfoot, Pointed Dock, Cat Mint (colour litho), English School, (19th century) / Private Collection / Bridgeman Images

LLM6020695: Sweet Flag, Flux Weed, Male Fern, Golden Rod, Sciatica Cress (colour litho), English School, (19th century) / Private Collection / Bridgeman Images

SZT6307788: Lightcast, 1974 (b/w photo) / Bridgeman Images

SZT6304527: Nursing, 1960 (b/w photo) / Bridgeman Images

QGA936393: Constriction of an arm in case of bleeding / Private Collection / Bridgeman Images

XJF872798: Our Pretty Doctor, published in Punch Magazine, 1870 (engraving), English School, (19th century) / Private Collection / Bridgeman Images

GEG2091967: La peste a Marseille / Bridgeman Images

IMO2443734: Meditation / Bridgeman Images

EVB2938936: Afghan farmers walk in their poppy fields as harvesting season nears. In Now Zad Helmand Province in western Afghanistan April 14 2010., Photo by:Everett Collection / Bridgeman Images

CHT418420: Guillaume Rondelet (woodcut), French School, (16th century) / Musee d'Histoire de la Medecine, Paris, France / Bridgeman Images

XRA2706710: French dancer Yvette Chauvire and Jean Paul Sereni, masseur of the Paris Opera, November 24, 1962 (b/w photo) / Bridgeman Images

BAD3436565: Andrews Liver Salt Magazine, advert, UK, 1950s / Bridgeman Images

BAD3436545: Mac Medicine Magazine, advert, UK, 1950s / Bridgeman Images

PFH3061237: Burma / Myanmar: A young Bamar / Burmese girl wearing the Burmese cosmetic thanaka in the design of a bodhi tree leaf, Mandalay / Bridgeman Images

LLH3656541: Carving a piece of wood, illustration for Antikamnia Calendar, 1898 (colour litho), Crucius or Crusuius, Louis (1862-1898) / Private Collection / Bridgeman Images

GNG5256118: Pilgrim rescue at World Youth Day Madrid Spain / Bridgeman Images

GNG5256138: Ambulance at World Youth Day Madrid Spain / Bridgeman Images

GNG6278764: Health center run by a catholic NGO in Dapaong, Togo, 2019 (photo) / Bridgeman Images

GNG6278765: Health center run by a catholic NGO in Dapaong, Togo, 2019 (photo) / Bridgeman Images

FLO4990666: Senna, Senna alexandrina (Cassia acutifolia). Chromolithograph after a botanical illustration from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4990690: Mistletoe, Visum album. Chromolithograph after a botanical illustration by Walther Muller from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4990467: Cajuput or white samet, Melaleuca cajuputi. Chromolithograph after a botanical illustration from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4992619: Sugar cane, Saccharum officinarum. Chromolithograph after a botanical illustration from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images

FLO4992890: Cumin, Cuminum cyminum. Chromolithograph after a botanical illustration from Hermann Adolph Koehler's Medicinal Plants, edited by Gustav Pabst, Koehler, Germany, 1887. / Bridgeman Images