Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Inhibition of mTORC1 by rapamycin leads to immunosuppression, prevention of trasplant rejection and inhibition of tumor growth.
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.
Biological protein and molecule, 3d rendering. 3D illustration.
A ribbons model of Human Growth Hormone, also known as Somatotropin, with a translucent surface model.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
Squash preparation of  onion root tip cells stained to reveal chromosomes,  Bright field illumination, light microscopy.  This image was taken with the X40 objective lens.  Depth of focus is extremely low at this magnification.  Smaller apertures give greater depth of focus, but image quality deteriorates and resolution is greatly reduced.  The aperture in this image was optimised for contrast and resolution. 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.
Shiny artificial molecular structure in many colors. Horizontal composition, isolated on black background.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
3d rendering of Easter eggs background
Lily leaf c.s. under microscope
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
Adiponectin (also referred to as GBP-28, apM1, AdipoQ and Acrp30) is a protein hormone and adipokine, which is involved in regulating glucose levels as well as fatty acid breakdown.  3D cartoon model, white background.
Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
Aromatase (estrogen synthase), an enzyme responsible for a key step in the biosynthesis of estrogens. 3d structure.
Computer generated abstract concept image of 3d spheres like metaphor of abstract business processes.
p53 (blue) tagged with ubiquitin (yellow) is degraded into small peptides by a proteasome (violett). p53 prevents cancer formation and acts as a guardian of the genome. Mutations in the p53 gene contribute to about half of the cases of human cancer.
plant Soya Stem C.S. under light mircoscope with white background
Biological protein and molecule, 3d rendering. 3D illustration.
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.
3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background
Digital background depicting innovative technologies in (AI) artificial systems, neural interfaces and internet machine learning technologies
Backgrounds of Bacteria and Mold under the microscope in Lab.
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.
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
Colorful chain of amino acids or bio molecules called proteins - 3d illustration
Liver Fluke Section under light microscope with white background
The coronavirus main protease plays a pivotal role in viral gene expression and replication through the proteolytic processing of replicase polyproteins and is an attractive target for anti-CoV drug design. A computer 3D cartoon interaction complex model, white background.
Slice of natural crystal for patterns and textures use with high resolution.
Free Images: "bestof:PDB 2k3f EBI.png Low resolution protein structures Ribosome and ribosomal fragments Ribosome and ribosomal fragments Ribosome complexes 70S ribosome functional"
Ribosome mRNA translation gl.svg
Ribosome mRNA translation tr.svg
Ribosome mRNA translation zh.svg
Ribosome mRNA translation it.svg
Ribosome mRNA translation en.svg
Ribosome mRNA translation pl.svg
Ribosome mRNA translation fr.svg
Ribosome mRNA translation bg.svg
Ribosome mRNA translation hr.svg
Ribosome mRNA translation uk.svg
Ribosome mRNA translation es.svg
Ribosome mRNA translation cs.svg
drawing-nerve-cell-neurone-732830.png
drawing-nerve-cell-neurone-730778.jpg
drawing-nerve-cell-neurone-730755.png
Bacteria.svg
Ribosom mRNA translation de.svg
Diagram human cell nucleus numbered version.svg
Ribossomo tradução mRNA.svg
Plant cell structure svg 2.svg
Animal Cell.svg
Plant cell structure-en.svg
Plant cell structure svg labels.svg
PDB 2k3f EBI.png
PDB 3bbn EBI.png
PDB 1ibl EBI.jpg
PDB 1ibk EBI.jpg
PDB 1ibm EBI.jpg
PDB 1jgq EBI.jpg
PDB 1gix EBI.jpg
PDB 1jgo EBI.jpg
PDB 1jgp EBI.jpg
PDB 1pns EBI.jpg
PDB 1pnx EBI.jpg
PDB 1pnu EBI.jpg
PDB 1pny EBI.jpg
PDB 1voq EBI.jpg
PDB 1vos EBI.jpg
PDB 1vov EBI.jpg
PDB 1vox EBI.jpg
PDB 1voz EBI.jpg
PDB 1mj1 EBI.jpg
PDB 1ml5 EBI.jpg
PDB 1vor EBI.jpg
PDB 1vou EBI.jpg
PDB 1vow EBI.jpg
PDB 1voy EBI.jpg
PDB 1vp0 EBI.jpg
PDB 1s1h EBI.jpg
PDB 1s1i EBI.jpg
PDB 2jq7 EBI.png
PDB 3bbo EBI.png
PDB 2zkr EBI.png
PDB 2zkq EBI.png
PDB 2om7 EBI.png
PDB 2r1g EBI.png
PDB 3cc2 EBI.png
PDB 3d5a EBI.png
PDB 3d5c EBI.png
PDB 2vqe EBI.png
PDB 2vqf EBI.png
PDB 2uxd EBI.png
PDB 2uxb EBI.png
PDB 2qnh EBI.png
PDB 2v48 EBI.png
PDB 2v46 EBI.png
PDB 2qal EBI.png
PDB 2qan EBI.png
PDB 2qbf EBI.png
PDB 2qbd EBI.png
PDB 3df1 EBI.png
PDB 3df3 EBI.png
PDB 2qoy EBI.png
PDB 2qp0 EBI.png
PDB 2qb9 EBI.png
PDB 2qbb EBI.png
PDB 2qbh EBI.png
PDB 2qbj EBI.png
PDB 2qou EBI.png
PDB 2qow EBI.png
PDB 2z4m EBI.png
PDB 2vho EBI.png
PDB 2z4k EBI.png
PDB 2vhp EBI.png
PDB 2qbg EBI.png
PDB 2qov EBI.png
PDB 2qox EBI.png
PDB 2z4n EBI.png
PDB 3bbx EBI.png
PDB 2qam EBI.png
PDB 2qp1 EBI.png
PDB 3df2 EBI.png
PDB 3df4 EBI.png
PDB 2qba EBI.png
PDB 2qbc EBI.png
PDB 2qbi EBI.png
PDB 2vhm EBI.png
PDB 2vhn EBI.png
PDB 2qao EBI.png
PDB 2qoz EBI.png
Terms of Use   Search of the Day