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B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background

Cells in the body examined by endoscope

brown fat cell also called brown adipose tissue side to side with white fat cell 3d rendering

Molecular Model of Human Insulin with disulfide bonds shown.

Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).

Chain or ribbon diatom, a type of algae.

copper hydroxide, pools abstract structure

Fictitious molecule model inside red and blue pill isolated on white.

3D cartoon and Gaussian surface models, PDB 2gjx, white background

Stem of Nerium indicum T.S. under light mircoscope with white background

Baryte or barite is a mineral consisting of barium sulfate. The baryte group consists of baryte, celestine, anglesite and anhydrite. 3d illustration

3d rendering of Easter eggs background

Amitriptyline is used as an antidepressant and antimigraine drug. It blocks sodium channels on neuronal membrans. Sodium channels generate and propagate action potentials in neurons and muscle. Source: PDB entry 6AGF

H2 Hydrogen Molecule Fuel Cell Element Vehicle Biodegradable Ethical Renewable Energy

Multicolored antibodies or immunoglobulin protein structures - 3d illustration

Energy exchange of electrons between atoms

An antibody, also known as an immunoglobulin, is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. 3D cartoon and Gaussian surface models with differently colored chains, white background.

3D rendering of microscopic molecular structure

Beta-carotene pigment molecule. 3D rendering. Atoms are represented as spheres with conventional color coding: hydrogen (white), carbon (grey).

Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.

$The Raf/MEK/ERK (MAPK) propagates growth signals in the cell. Misregulation can lead to cancer.\nThe red dots on the active EGFR are phosphorylated tyrosines. PDB entries: 1egf, 1nql, 1m17, 2jwa, 3njp, 2gs6, 1gri, 1xd2, 3ksy, 5p21, 6xi7, 6q0j, 2y4i,$

DNA A-T Pair

macro close up of firebug eggs laid on a glass pane

Freshness capsule

3D cartoon and Gaussian surface models, PDB 4cmh, white background

stx2a is a subtype of Shiga toxin-producing E. coli (STEC) linked to Hemolytic Uremic Syndrome (HUS), a severe condition impacting kidney function and blood clotting. STEC poses a significant risk of foodborne illness and can spread within communities including family members.

Acetylcholine receptors in the lipid layer of cell membrane.

Collapse of a donut-shaped object

From left to right: the NMDA and AMPA receptors transport calcium cations into neurons after being activated by the neurotransmitter glutamate and the GABA receptor (right) transport chloride anions after the activation by gamma aminobutyrate. PDB entries: 6wht, 3kg2, 6d6u

In vitro bacterial culture

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Southern blue flag iris plant iris versicolor with yellow accented blossom.jpg

Southern blue flag iris flower with purple blue accents blossom in long grass.jpg

Snells law wavefronts.gif

Bacon and egg plants flowers.jpg

Jamaican_Sunrise,_Hamstead,_Jamaica,_ca.1875-ca.1940_(imp-cswc-GB-237-CSWC47-LS11-033).jpg

Gustave_Wappers_-_Épisode_des_Journées_de_septembre_1830_sur_la_place_de_l'Hôtel_de_Ville_de_Bruxelles.jpg

Jacques-Louis David, The Coronation of Napoleon edit.jpg

Blue and yellow flowers.jpg

Daisy red yellow.jpg

Purple yellow red flowers.jpg

Desert catchfly.jpg

Daisy yellow red close up.jpg

Red yellow beautiful flowers.jpg

Yellow flower with little red.jpg

Yellow red flower with green leaf.jpg

Raindrops on red and yellow flower.jpg

Dwarf crested iris iris cristata purple flower.jpg

Dwarf crested iris flower.jpg

Viola pubescens scabriuscula FWS-1.jpg

White yellow and red day lily flower.jpg

Red and yellow tulip flower.jpg

Nodding spotted red pink and yellow blossom.jpg

Red yellow and orange leaves on the trees.jpg

Roller coaster track.jpg

Bright yellow trout lily erythronium americanum nodding bloom with red stamen.jpg

Southern red trillium plant with yellow blossom with short stamens.jpg

Yellow partridge pea flower with red center cassia fasciculata.jpg

Yellow tan leonard skipper butterfly standing on red blossom hesperia leonardus leonardus.jpg

Close up side view of red cap and yellow gills of mushroom.jpg

Shooting star plant flower dodecatheon meadia with yellow accents and red stamen.jpg

Spotted jewelweed plant impatiens capensis flower is yellow with red dots on it.jpg

Oenothera rhombipetala FWS-00.jpg

Spicebush swallowtail papilio troilus black butterfly with yellow and orange dots and neon blue shading.jpg

Satyrium edwardsii butterfly with gray wings with dark red and ligh neon blue accents.jpg

Behind bayside cafe red yellow and pink sunset with ocean and clouds.jpg

Kasatochi Island, Alaska Maritime NWR.jpg

Blue Iris flower.jpg

Red ocotillo flower.jpg

Dark sunset.jpg

Red roses against sky.jpg

Red and gold flower.jpg

San Diego sunrise.jpg

Balboa park yellow roses garden.jpg

Yellow roses dew petals.jpg

Sunflowers helianthus annuus.jpg

A beautiful flower among the dying.jpg

Beautiful white flower in park.jpg

Gold and red flower dark green leaves.jpg

Macro flowers petals.jpg

Tomatoes blossoms flowers.jpg

Bushfire sunset.jpg

Cactus silhouetted by the morning sun.jpg

Sunflower flower against blue sky background.jpg

Sunset at biscuit basin.jpg

Albany wind farm against the sunset western Australia.jpg

False foxglove flower aureolaria flava.jpg

Judges take a close look at the entries for the 2011 Federal Junior Duck Stamp Contest.jpg

"Canoes_on_Beach,_Calabar",_late_19th_century_(imp-cswc-GB-237-CSWC47-LS2-027).jpg

Mug and Torus morph.gif

Miners at the American Radiator Mine, Mount Pleasant, Westmoreland County, Pennsylvania Digital ID- (digital file from original neg.) fsa 8a00958 http- hdl.loc.gov loc.pnp fsa.8a00958.jpg

Miners at American Radiator Mine, Mount Pleasant, Westmoreland County, Pennsylvania Digital ID- (digital file from original neg.) fsa 8a00946 http- hdl.loc.gov loc.pnp fsa.8a00946.jpg

Red windsor cheese.jpg

Mia Hamm corner.jpg

Mia Hamm corner (cropped).jpg

Akko. House Weizmann Street (660189).jpg

Blue agapanthus.jpg

Background red.jpg

Blue fatalities.jpg

Salote Tupou III of Tonga in 1908.jpg

Polemonium vanbruntiae FWS-2.jpg

Red slug.jpg

Red goldfish animal.jpg

Chimney red.jpg

Aquarium fish red.jpg

Red autumn.jpg

Red desert.jpg

A red rose.jpg

Karner blue butterfly.jpg

Red garden.jpg

Blue water.jpg

Red bouquet.jpg

Leaf yellow.jpg

Tractor red.jpg

Blue candle.jpg

Green yellow lizard.jpg

Lupine blue.jpg

Cherry red fruits.jpg

Autumn red peach.jpg

Red hibiscus flower.jpg

Big yellow mums.jpg

Small blue orchid.jpg

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