Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
A ball and stick model of Human Insulin. Isolated on black.
Immunotherapy of Alzheimer's disease: Monoclonal antibody (light blue) bound to an amyloid beta peptide (orange), that is aggregated to amyloid beta fibrils, which build up amyloid plaques.
Cosmetic serum Oil drop on Saggy skin cell, Skin Repair, moisturizer, collagen serum, advertising background ready to use, 3D rendering
Phospholipid bilayer membrane structures that make up living cells and their contents. This is an image of membrane proteins in the membrane.\nThis image, which looks like a plastic model, evokes biology and biochemistry. It can be used as a cover for magazines, textbooks and presentation materials.\nThis image was not created by AI.
Inside protein molecule
Resistin also known as adipose tissue-specific secretory factor (ADSF) or C/EBP-epsilon-regulated myeloid-specific secreted cysteine-rich protein (XCP1) is a cysteine-rich peptide hormone derived from adipose tissue that in humans is encoded by the RETN gene. 3D cartoon and Gaussian surface models, chain id color scheme, based on PDB 1rfx, 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.
Lily leaf c.s. under microscope
Biological protein and molecule, 3d rendering. 3D illustration.
H2 Hydrogen Molecule Fuel Cell Element Vehicle Biodegradable Ethical Renewable Energy
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
Cells in the body examined by endoscope
DNA close-up, DNA Molecule Model, DNA Strands, DNA animation
Particles, medical concept
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.
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.
Acetylcholine receptors in the lipid layer of cell membrane.
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
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
Shiny artificial molecular structure in many colors. Horizontal composition, isolated on black background.
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
DNA A-T Pair
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.
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 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.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).
A ball and stick model of a Polytetrafluoroethylene molecule, also known as PTFE or most commonly Teflon. It is a polymer consisting of only carbon and fluorine atoms. It is used as a non-stick coating for cookware, as a lubricant, and it is also used to contain highly reactive chemicals as it is extremely non-reactive.
Biological protein and molecule, 3d rendering. 3D illustration.
Close-up of glass marbles flying into air against coloured background.
Free Images: "bestof:PDB 1t16 EBI.jpg Membrane and cell surface proteins and peptides Transmembrane beta-barrels Porins Outer membrane protein transport protein Long-chain fatty"
Lipid raft organisation scheme.svg
Insulin glucose metabolism ZP.svg
Insulin glucose metabolism ZP-ca.svg
Hepatitis B virus v2.svg
Scheme facilitated diffusion in cell membrane-en.svg
Scheme facilitated diffusion in cell membrane-zh.svg
Scheme facilitated diffusion in cell membrane-eo.svg
Scheme facilitated diffusion in cell membrane-zh (zh-tw).svg
TOM complex.svg
Cell membrane detailed diagram blank.svg
Human genome by functions.svg
Scheme facilitated diffusion in cell membrane-ca.svg
Cellular tight junction keys.svg
Cell membrane detailed diagram id.svg
Euglenid pellicula scheme.svg
Exocytosis types.svg
Endocytosis types.svg
Cell membrane detailed diagram en.svg
Scheme facilitated diffusion in cell membrane-fr.svg
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
Scheme facilitated diffusion in cell membrane-es.svg
Scheme simple diffusion in cell membrane-fr.svg
Bacteria.svg
Electron transport chain.svg
Diagram human cell nucleus numbered version.svg
Endocytosis types-fr.svg
CD8 receptor.svg
Insulin glucose metabolism ZP (it).svg
Scheme sodium-potassium pump-ja.svg
ETC electron transport chain.svg
Insulin glucose metabolism ZP-he.svg
Intermediate filament.svg
Scheme sodium-potassium pump-it.svg
Scheme sodium-potassium pump-en-2.svg
Scheme sodium-potassium pump-zh.svg
Scheme sodium-potassium pump-zh (zh-tw).svg
Stat domain structure (zh-cn).svg
Scheme sodium-potassium pump-en.svg
Scheme sodium-potassium pump-pl.svg
Scheme sodium-potassium pump-bs.svg
Complement pathway.svg
Endocytoza typy.svg
Lipid bilayer fusion.svg
Scheme sodium-potassium pump-he.svg
Scheme secundary active transport-heb.svg
Scheme secundary active transport-en.svg
Scheme secundary active transport-pl.svg
Scheme sodium-potassium pump-el.svg
Insulin glucose metabolism ZP (ru).svg
Cellular tight junction-sv.svg
Adherens Junctions structural proteins-LangNeutral.svg
Scheme sodium-potassium pump-de.svg
Scheme sodium-potassium pump-ca.svg
Scheme sodium-potassium pump-cs.svg
Adherens Junctions structural proteins.svg
Cellular tight junction-en.svg
Cellular tight junction-fr.svg
Design_Analysis_of_the_B-24J_Liberator.png
PDB 1t16 EBI.jpg
PDB 1t1l EBI.jpg
PDB 1po0 EBI.jpg
PDB 1kmp EBI.jpg
PDB 2guf EBI.jpg
PDB 2gsk EBI.jpg
PDB 1nqg EBI.jpg
PDB 1kmo EBI.jpg
PDB 1pnz EBI.jpg
PDB 1po3 EBI.jpg
PDB 1nqe EBI.jpg
PDB 1nqf EBI.jpg
PDB 1nqh EBI.jpg
PDB 1by5 EBI.jpg
PDB 1by3 EBI.jpg
PDB 2fcp EBI.jpg
PDB 1qfg EBI.jpg
PDB 1qff EBI.jpg
PDB 1fcp EBI.jpg
PDB 1fi1 EBI.jpg
PDB 1qjq EBI.jpg
PDB 1qkc EBI.jpg
PDB 2grx EBI.jpg
PDB 1fep EBI.jpg
PDB 1af6 EBI.jpg
PDB 1mpm EBI.jpg
PDB 1mpq EBI.jpg
PDB 1mpo EBI.jpg
PDB 1mal EBI.jpg
PDB 1mpn EBI.jpg
PDB 2mpr EBI.jpg
PDB 1mpr EBI.jpg
PDB 1bxw EBI.jpg
PDB 2ge4 EBI.jpg
PDB 1qj9 EBI.jpg
PDB 1orm EBI.jpg
PDB 1p4t EBI.jpg
PDB 1qjp EBI.jpg
PDB 1g90 EBI.jpg
PDB 1qj8 EBI.jpg
PDB 1q9f EBI.jpg
PDB 1q9g EBI.jpg
Terms of Use   Search of the Day