ALLERGEN AND PARASITE IMAGES

Scanning electron micrograph of a grain of marigold pollen. Credit: Annie Cavanagh/Welllcome Images CC BY NC ND Marigold pollen

Scanning electron micrograph of a single pollen grain from the common morning glory (Ipomoea purpurea), still sitting on the anther. This is used as a traditional Chinese medicine. Some varieties have hallucinogenic properties similar to LSD. Magnification 600x. Credit: Stefan Eberhard/Wellcome Images BIGPICTUREEDUCATION.COM Morning glory pollen grain

Two grains of pollen from a lissianthus plant. Credit: Annie Cavanagh/Wellcome ImagesAnnie Cavanagh BIGPICTUREEDUCATION.COM Lissianthus pollen

Penicillium mould Scanning electron micrograph of Penicillium mould producing chains of spores. Credit: David Gregory & Debbie Marshall/Wellcome Images BIGPICTUREEDUCATION.COM

Asbestos fibres (silicate minerals) in human lung tissue. Inhalation of and prolonged exposure to asbestos fibres can cause lung disease including mesothelioma (a type of cancer), pleural plaque and pleural effusion. Credit: Spike Walker/Wellcome Images BIGPICTUREEDUCATION.COM Asbestos fibres in a human lung

Dust mite Scanning electron micrograph of a dust mite on a dust particle. Dust mites feed on non-living organic material such as flakes of shed human skin. Dust mites are a common cause of asthma and allergic symptoms worldwide. Credit: Annie Cavanagh/Wellcome ImagesAnnie Cavanagh BIGPICTUREEDUCATION.COM

Nematode parasite A high-resolution image of the human helminth parasite Trichinella spiralis. Trichinella are the smallest nematode parasite of humans. Humans can be infected with the parasite by eating infected meat, such as pork. Credit: David Linstead/Wellcome Images BIGPICTUREEDUCATION.COM

Threadworms in the villi of the gut Threadworms (green), also known as Enterobius vermicularis, are tiny parasitic worms that hatch eggs and infect the large intestines of humans. Two villi (finger-like projections) in the gut are shown here (brown). Threadworms are the most common type of worm infection in the UK, and are particularly common in young children. Up to 40 per cent of under-tens are infected with threadworms at any one time. Credit: Annie Cavanagh/Wellcome ImagesAnnie Cavanagh BIGPICTUREEDUCATION.COM

Malaria-causing parasites Blood smear showing the presence of Plasmodium falciparum parasites, which cause malaria, in red blood cells. Credit: Spike Walker/Wellcome Images BIGPICTUREEDUCATION.COM

Scanning electron micrograph of a mosquito (Anopheles stephensi), showing the wing, proboscis, antennae, abdomen and legs. Anopheles stephensi is one of the major vectors of urban malaria in India and some parts of Asia. It is commonly used in research as it can be easily reared and maintained in the laboratory. Credit: Lauren Holden/Wellcome Images BIGPICTUREEDUCATION.COM Mosquito

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