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).
A ball and stick model of Human Insulin. Isolated on black.
3D cartoon and molecular surface models, chain id color scheme, putative membrane shown, pdb 1l7v, white background
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.
DNA close-up, DNA Molecule Model, DNA Strands, DNA animation
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer
Proteasomes are molecular machines for breaking down proteins called proteolysis, only target proteins that have been marked for destruction called ubiquitin to the target protein, 3d rendering
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).
A conceptual image of an abstract network of multi-coloured organic strands arranged in a non regular pattern all connected together in a complex manner. The network is made from smaller multi-coloured squares and polyhedra, in vivid colours against a pastel toned background. Shows background and foreground elements to the structure.
3D cartoon and Gaussian surface models, PDB 2vtb, white background.
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.
Plasma Membrane Of  Cell With other molecules, 3d render
Particles, medical concept
Host cells with spores (mold) are inside wood under the microscope for education.
Focal nodular hyperplasia (FNH) is a benign liver lesion that is composed of a proliferation of hyperplastic hepatocytes surrounding a central stellate scar. Typically, FNH is a solitary lesion that is more commonly seen in women.
The LDL-receptor (red) is a membrane protein found in almost every human cell. It binds to the apoprotein B100 from LDL-particles and mediates their internalization (endocytosis) in the cell. This occurs in almost all cells but mainly in the liver where it removes about 70 % of LDL from the circulation.
Cells in the body examined by endoscope
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
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.
Bronchitis and alveolitis in lung of horse infected with equine influenza virus, 200x magnification.
DNA A-T Pair
3d rendering of compromised liposome releasing its contents. Magnified image of a liposome, showing leakage of its encapsulated material.
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.
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
Stem of Nerium indicum T.S. under light mircoscope with white background
Spike glycoprotein homotrimer, a main target for neutralization antibody, to bind its receptor, ACE2, and mediate membrane fusion and virus entry. 3D cartoon and Gaussian surface models, white background.
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
Acetylcholine receptors in the lipid layer of cell membrane.
Computer generated abstract concept image of 3d spheres like metaphor of abstract business processes.
Free Images: "bestof:PDB 2bs2 EBI.jpg Membrane and cell surface proteins and peptides Heme-binding four-helical bundle Fumarate reductase respiratory complex transmembrane subunits"
Hepatitis B virus v2.svg
Lipid raft organisation scheme.svg
Cellular tight junction keys.svg
PDB 2bs2 EBI.jpg
PDB 1qlb EBI.jpg
PDB 1e7p EBI.jpg
PDB 1nek EBI.jpg
PDB 1nen EBI.jpg
PDB 2acz EBI.jpg
PDB 1kf6 EBI.jpg
PDB 1l0v EBI.jpg
PDB 1kfy EBI.jpg
PDB 2b76 EBI.jpg
PDB 3cir EBI.png
PDB 3cx5 EBI.png
PDB 3cxh EBI.png
PDB 1q16 EBI.jpg
PDB 1y4z EBI.jpg
PDB 1siw EBI.jpg
PDB 1ppj EBI.jpg
PDB 2a06 EBI.jpg
PDB 2fyu EBI.jpg
PDB 1sqx EBI.jpg
PDB 1sqv EBI.jpg
PDB 1sqp EBI.jpg
PDB 1sqq EBI.jpg
PDB 1p84 EBI.jpg
PDB 1kyo EBI.jpg
PDB 1pp9 EBI.jpg
PDB 1ntm EBI.jpg
PDB 1l0l EBI.jpg
PDB 1ntz EBI.jpg
PDB 1ntk EBI.jpg
PDB 1sqb EBI.jpg
PDB 1l0n EBI.jpg
PDB 1nu1 EBI.jpg
PDB 1be3 EBI.jpg
PDB 1bgy EBI.jpg
PDB 1qcr EBI.jpg
PDB 1bcc EBI.jpg
PDB 2bcc EBI.jpg
PDB 3bcc EBI.jpg
PDB 1kb9 EBI.jpg
PDB 2ibz EBI.jpg
PDB 1ezv EBI.jpg
PDB 1nkz EBI.jpg
PDB 2fkw EBI.jpg
PDB 1kzu EBI.jpg
PDB 1lgh EBI.jpg
PDB 1jo5 EBI.jpg
PDB 1dx7 EBI.jpg
PDB 1ijd EBI.jpg
PDB 1xrd EBI.jpg
PDB 1kqf EBI.jpg
PDB 1kqg EBI.jpg
PDB 2e74 EBI.jpg
PDB 2e76 EBI.jpg
PDB 1vf5 EBI.jpg
PDB 2e75 EBI.jpg
PDB 2d2c EBI.jpg
PDB 1q90 EBI.jpg
PDB 3d38 EBI.png
PDB 1l2p EBI.jpg
PDB 1rh5 EBI.jpg
PDB 1rhz EBI.jpg
PDB 1rkl EBI.jpg
PDB 1a91 EBI.jpg
PDB 1ijp EBI.jpg
PDB 1c99 EBI.jpg
PDB 1c17 EBI.jpg
PDB 1l6t EBI.jpg
PDB 1c0v EBI.jpg
PDB 2iub EBI.jpg
PDB 2hn2 EBI.jpg
PDB 2bbj EBI.jpg
PDB 2hyd EBI.jpg
PDB 2onj EBI.jpg
PDB 1qjp EBI.jpg
PDB 1bxw EBI.jpg
PDB 1g90 EBI.jpg
PDB 2ge4 EBI.jpg
PDB 1qj8 EBI.jpg
PDB 1qj9 EBI.jpg
PDB 1q9f EBI.jpg
PDB 1orm EBI.jpg
PDB 1q9g EBI.jpg
PDB 1p4t EBI.jpg
PDB 1thq EBI.jpg
PDB 1mm5 EBI.jpg
PDB 1mm4 EBI.jpg
PDB 1ys5 EBI.jpg
PDB 1i78 EBI.jpg
PDB 1k24 EBI.jpg
PDB 1uyn EBI.jpg
PDB 1uyo EBI.jpg
PDB 1qd6 EBI.jpg
PDB 1qd5 EBI.jpg
PDB 1ilz EBI.jpg
PDB 1fw2 EBI.jpg
PDB 1ild EBI.jpg
Terms of Use   Search of the Day