Allergen Collection

Hazel pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from the Hazel tree, Corylus avellana. These microspores are shed from male catkins

Eyelash mite, SEM
Eyelash mite. Coloured scanning electron micrograph (SEM) of an eyelash, or follicle, mite (Demodex folliculorum), a harmless parasite which lives inside human hair follicles

Eyelash mite tails, SEM
Eyelash mite tails. Coloured scanning electron micrograph (SEM) of the tails (pink) of three eyelash, or follicle, mites (Demodex folliculorum), protruding from a human hair follicle

Dust mite. Coloured Scanning Electron Micrograph (SEM) of a dust mite Dermatophagoides sp. in a sample of household dust. It is crawling among hair, fibres and other dust debris

Ivy pollen (Hedera helix), SEM
Ivy pollen (Hedera helix), coloured scanning electron micrograph (SEM). Magnification x1390 at 10cm wide

Eyelash mite tail, SEM
Eyelash mite tail. Coloured scanning electron micrograph (SEM) of the tail (centre) of an eyelash, or follicle, mite (Demodex folliculorum) protruding from a dissected human hair follicle

Follicle mite heads (SEM) C013 / 5120
Follicle mite heads (Demodex folliculorum), coloured scanning electron micrograph (SEM) of follicle or eyelash mites protruding from a dissected human hair follicle

Allergens in trachea. Coloured scanning electron micrograph (SEM) of the surface of the trachea (windpipe) with a number of pollen grains (yellow) attached

Cross section biomedical illustration of antibodies binding to mast cell after exposure to allergens

Cross section biomedical illustration of mast cell releasing histamine due to reaction with allergens

Dust mites, SEM Z445 / 0355
Dust mites (Dermatophagoides sp.) and dust debris, coloured scanning electron micrograph (SEM). Every house has millions of dust mites

Eyelash mite, SEM Z445 / 0308
Eyelash mite. Coloured scanning electron micrograph (SEM) of an eyelash, or follicle, mite (Demodex folliculorum), a harmless parasite which lives inside human hair follicles

Dust mite. Coloured scanning electron micrograph (SEM) of the house dust mite, Dermatophagoides pteronyssinus on woven household fabric. This mite has eight legs, with the head at lower left

Dust mites. Coloured scanning electron micrograph (SEM) of two dust mites (Dermatophagoides sp.) on fabric fibres. Millions of dust mites inhabit the home, feeding on shed skin cells

Coloured SEM of a dust mite, Dermatophagoides sp
Dust mite. Coloured Scanning Electron Micrograph (SEM) of a dust mite Dermatophagoides sp. in a sample of household dust. It is crawling among hair, fibres and other dust debris

Coloured SEM of household dust (allergens)
Household dust. Coloured Scanning Electron Micro- graph (SEM) of a sample of household dust. Dust contains an assortment of substances which can cause asthma or other allergic reactions

Household dust, SEM
Household dust, coloured scanning electron micrograph (SEM). Magnification: x130 when printed at 10 centimetres wide

Birch pollen allergen F006 / 9335
Birch pollen allergen. Molecular model of Bet v 1l, the molecule responsible for allergic reactions to birch pollen. Here

Grass pollen allergen molecule
Grass pollen allergen. Molecular model of the major grass pollen allergen Phl p2 complexed with the antigen-binding fragment (fab) of its human immunoglobulin E antibody

Hazel pollen grains, SEM C018 / 0308
Hazel pollen grains, coloured scanning electron micrograph (SEM). Hazel pollen is distributed by the wind from catkins. The pollen is very small and light

Pollen grains, artwork
Pollen grains. Artwork of pollen grains from different flowers. The outer wall (exine) of each pollen grain is highly sculpted to aid their dispersal

Cat allergen protein, molecular model C015 / 3962
Cat allergen protein. Molecular model of the tetrameric form of the major cat allergen fel d 1 (Felis domesticus allergen 1)

Cat allergen protein, molecular model
Cat allergen protein. Molecular model of the tetrameric form of the major cat allergen fel d 1 (Felis domesticus allergen 1)

Wind dispersal of pollen C015 / 5182
Wind dispersal of pollen. Million of pollen grains being dispersed on the wind

Birch pollen allergen molecule C013 / 8889
Birch pollen allergen molecule. Computer model showing the secondary structure of a Bet v 1L molecule. This molecule is responsible for allergic reactions to pollen from birch (Betula sp.) trees

Annatto seed, SEM
Annatto seed. Coloured scanning electron micrograph (SEM) of the seed of the tropical achiote tree (Bixa orellana). The outer covering of the seed produces the red food colouring known as annatto

Bindweed pollen grains, SEM
Pollen grains. Coloured scanning electron micrograph (SEM) of bindweed (Calystegia sepium) pollen grains (blue). There is great variation in the size, shape and surface texture of pollen

Carpet beetle larva hairs, SEM
Beetle larva hairs. Coloured scanning electron micrograph (SEM) of hairs from a carpet beetle larva (family Dermestidae). These spear-headed hairs can often cause irritation when they come into

Carpet beetle larva hair, SEM
Beetle larva hair. Coloured scanning electron micrograph (SEM) of a hair from a carpet beetle larva (family Dermestidae). Large numbers of these spear-headed hairs can cause irritation when they come

Carpet beetle larval hairs, SEM
Carpet beetle larval hairs. Coloured scanning electron micrograph (SEM) of the hairs of a carpet beetle (family Dermestidae). Carpet beetle larvae are found in the dirtier areas of homes

Human diseases. Artwork of a male silhouetted figure, surrounded by various disease-causing organisms. The mosquito (Anopheles gambiae, upper left) transmits a parasitic protozoan it bites

Artwork of mast cells in an allergic response
Allergic response. Artwork showing mast cells during an allergic response. Allergens (green structures) from foreign bodies have bound to antibodies (yellow)

Coloured SEM of trachea surface with pollen & dust

Allergy food challenge
MODEL RELEASED. Food challenge. 10-year-old boy undergoing a double-blind oral food challenge to test for a food allergy. The boy will eat a variety of foods one by one

Allergens. Conceptual computer artwork of allergens in the nasal cavity. The spiky spheres could represent pollen grains, while the smooth spheres could represent dust particles

Dust mite allergy, conceptual artwork. Dust mites (Dermatophagoides sp.) are tiny arachnids that live in the home, feeding on shed skin cells

Asthma, artwork
Asthma. Computer artwork of allergens (green) in the airways of the lungs. Allergens, such as dust and pollen, can trigger an asthma attack

Asthma. Computer artwork of allergens (blue and green) amongst alveoli (tiny air sacs, beige) in a lung. Allergens, such as dust and pollen, can trigger an asthma attack

Household dust taken from a vacuum cleaner. Such dust comprises skin cells, dust mites, hairs, soil and earth, pollen grains, fungal spores and food particles

Salted peanuts (Arachis hypogaea) in a bowl. Peanuts are a good source of E and B-complex vitamins, and protein. A small percentage of people have a peanut allergy

Eyelash mites, artwork

Dust mites, artwork

Eyelash mite, artwork

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"Allergen: Unseen Culprits Triggering Allergic Reactions" Did you know that tiny creatures like eyelash mites and dust mites can wreak havoc on our immune systems? These microscopic organisms, captured under the lens of a scanning electron microscope (SEM), are often responsible for triggering allergic reactions in many individuals. Take a closer look at the world of allergens. SEM images reveal the intricate details of eyelash mite tails, showcasing their presence on our very own lashes. These minuscule creatures, invisible to the naked eye, can cause itching and irritation for those who are sensitive to them. But it's not just these critters that provoke allergies. Hazel pollen grains and ivy pollen from plants like Hedera helix also play a role in triggering allergic responses. SEM images allow us to observe their unique structures up close, giving insight into how they interact with our bodies. Delving deeper into the microscopic realm, we discover follicle mite heads lurking within hair follicles. These unwelcome guests may contribute to skin irritations and allergies when present in excessive numbers. Allergens don't stop there – they infiltrate even further into our respiratory system. Biomedical illustrations depict allergens making their way into the trachea, causing discomfort and breathing difficulties for allergy sufferers. The battle between allergens and our immune system is illustrated through biomedical cross-sections showing antibodies binding to mast cells after exposure to these troublesome substances. In response, mast cells release histamine – a chemical compound responsible for common allergy symptoms such as sneezing or watery eyes. Dust mites make yet another appearance as notorious allergenic agents. SEM images provide an up-close view of these tiny arachnids that thrive in household environments such as bedding or upholstery materials. Understanding these unseen culprits is crucial in managing allergies effectively.