Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
Inside protein molecule
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
Diffuse large B-cell lymphoma, or DLBCL, is a cancer that starts in white blood cells called lymphocytes.
Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway.  Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.
3D CG rendered image of scientifically accurate Feline Panleukopenia Virus (cat distemper virus) Capsid Structure based on PDB : 1FPV (surface style)
Biological protein and molecule, 3d rendering. 3D illustration.
Particles, medical concept
The NEK-7 independent NLRP3 inflammasome in it's hexameric conformation with ADP (red) bound. Inflammasomes are a promising target for the treatment of autoimmune diseases. PDB entry: 7zgu.
Close-up shooting of a green agate stone mineral surface isolated on white background. Its a macro shot shows nature beautiful details with back lit. Agate is a kind of natural gemstone. Abstract pattern. Good for Wallpaper texture background. Turquoise, blue
3D cartoon and Gaussian surface models, PDB 5fwk, white background
plant Stem-Collenchyma C.S. under light mircoscope with white background
Blue colored stem cells of a lentil plant under the microscope.
Endosomes - 3d rendered image of Endosomes are membrane-bound organelles. They are parts of endocytic membrane transport pathway.  Endomembrane system in cells. Bilayer Lipid Membrane. Abstract medical illustration. Microscopic view. Microbiologic research concept.
Cross-section Dicot, Monocot and Root of Plant Stem under the microscope for classroom education.
This computer-generated image vividly illustrates the invasive Group A Streptococcal bacteria, as they would appear under a microscope. This visual representation helps to understand the microscopic world of Group A Streptococcus and its potential to cause serious diseases.
After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.
Slice of natural crystal for patterns and textures use with high resolution.
3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background
Metastatic plasmacytoma, metastatic undifferentiated sarcoma. Microscopically show cellular material of mostly plasmacytiod cells. atypical mitoses are present. plasma cell tumor.
Squash preparation of stained onion root tip cells showing various stages of mitosis. Differential interference contrast optics on a Leica microscope, Image taken with the X40 objective lens.  Depth of focus is extremely shallow (just a few microns).  Differential interference contrast results in an optical slice horizontally through the specimen providing maximum possible resolution at this magnification and good contrast. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.
Host cells with spores (mold) are inside wood under the microscope for education.
Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Quantum Gravity 3d rendered image of a comprehensive exploration of Quantum Gravity theories. String theory, loop quantum gravity (LOG), causal dynamical triangulation, twistor theory, gravitational waves, spacetime, gravity waves, quantum mechanics, quantum entanglement concepts.
B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background
Acute ordinary hepatitis liver biopsy under light microscopy
Bronchitis and alveolitis in lung of horse infected with equine influenza virus, 200x magnification.
sheres on colored backgrounds
Free Images: "bestof:PDB 1p3b EBI.jpg All alpha proteins Histone-fold Histone-fold Nucleosome core histones Histone H2A EBI License 1p3b November 16 2008 Histone H2A Files uploaded"
Sunset_(California_Scenery)_by_Boston_Public_Library.jpg
Donax striatus Linnaeus, 1767.jpg
Nu_drapé_voile_bleu_cropped_R._Demachy_ca_1907-15.jpg
Mural na Catedral da Sé.jpg
Portret van Jan van Huysum Rijksmuseum SK-A-5008.jpeg.jpg
Coat_of_Arms_of_the_Russian_Federation_bw.svg
Croatia_film_clapperboard.svg
Flag_of_Croatia_with_border.svg
Human body silhouette.svg
US 103rd Infantry Division.svg
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
ROC Council of Agriculture Emblem.svg
Graham's Hierarchy of Disagreement-es.svg
Giovanni_Baglione_The_Angel_and_Saint_Joseph.jpg
William-Adolphe_Bouguereau_(1825-1905)_-_Le_saintes_femmes_au_tombeau_(1890)_img_2.jpg
Kaufmann-Seated_woman_with_fan-The_banker's_wife.jpg
San francisco districts.svg
Wappen_Lepel.svg
RomeFromMountAventine.jpg
Rome,_From_Mount_Aventine.jpg
DJIA historical graph (log)-2008-29-10.svg
Map-Namibia.svg
Jules_Frédéric_Bouchet_-_The_Salon_in_the_Montpensier_Wing,_Palais_Royal_-_Google_Art_Project_(NwHBMNhp_qaH4Q).jpg
Lincoln Park-Old Town map.svg
Map-USA-Hawaii.svg
José Justiniani Ramírez de Arellano, marqués de Peñaflorida, alcalde de Madrid.JPG
Flag-map of Communist Romania.png
Flag of Bulgaria 1967-1971.gif
Symptoms of swine flu hu.svg
Flag of the President of Paraguay.svg
Mask-radioactive.svg
Logan map.svg
Microphone slant.svg
Coat_of_arms_of_Abkhazia.svg
Recycle001-perc.svg
USS_Acoma_World_War_I.jpg
Woman Silhouette TV.svg
Tooth Section numbered-2.svg
New York regions map.svg
Uptown map.svg
Renoir by Bazille.jpg
De_aanvaarding_van_het_Hoog_Bewind_door_het_Driemanschap_in_naam_van_de_prins_van_Oranje,_21_november_1813_Rijksmuseum_SK-A-1558.jpeg
Average prokaryote cell- nl.svg
Rogers Park map.svg
Mag Mile map.svg
Memorieportret van Moses ter Borch Rijksmuseum SK-A-4908.jpeg
Carl_Christian_Vogel_von_Vogelstein_-_Junge_Dame_mit_Zeichengerät.jpg
Anna_Ermolova_with_children_by_Zakharov-Chechenets_(1840,_priv.coll).jpg
Anna_Alma-Tadema_-_Sir_Lawrence_Alma-Tadema's_Library_in_Townshend_House,_London_-_Google_Art_Project.jpg
Joseph_P._Emery_-_Sample_plate_-_Google_Art_Project.jpg
Southwest Side map.svg
Solar System size to scale ca.svg
Coat of arms of Cape Verde.svg
Loop map.svg
Voltage regulator foldback.svg
Members of no religious organizations in Iceland.svg
Leptodirus hohenwarti distribution german.svg
Near north map.svg
NFCC image.svg
Europe rail electrification en.svg
Near West Side map.svg
Flag proposed for the Turkish Republic of Northern Cyprus (1983).svg
PDB 1p3b EBI.jpg
PDB 1tzy EBI.jpg
PDB 2aro EBI.jpg
PDB 1hq3 EBI.jpg
PDB 1eqz EBI.jpg
PDB 2hio EBI.jpg
PDB 1kx5 EBI.jpg
PDB 1s32 EBI.jpg
PDB 1kx3 EBI.jpg
PDB 1m19 EBI.jpg
PDB 1p3i EBI.jpg
PDB 1m18 EBI.jpg
PDB 1p3l EBI.jpg
PDB 1p3p EBI.jpg
PDB 1p3g EBI.jpg
PDB 1p34 EBI.jpg
PDB 1p3o EBI.jpg
PDB 1m1a EBI.jpg
PDB 1kx4 EBI.jpg
PDB 2nzd EBI.jpg
PDB 1p3k EBI.jpg
PDB 1p3m EBI.jpg
PDB 1aoi EBI.jpg
PDB 1p3a EBI.jpg
PDB 1p3f EBI.jpg
PDB 1f66 EBI.jpg
PDB 1id3 EBI.jpg
PDB 2cv5 EBI.jpg
PDB 1zla EBI.jpg
PDB 2f8n EBI.jpg
PDB 2fj7 EBI.jpg
PDB 1u35 EBI.jpg
PDB 2hue EBI.jpg
PDB 2io5 EBI.jpg
PDB 2jss EBI.png
PDB 3c1b EBI.png
PDB 3c1c EBI.png
PDB 3b6f EBI.png
Terms of Use   Search of the Day