Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
A ball and stick + ribbons model of human Interleukin 2 or IL-2. Interleukin is a hormone which acts as a signalling molecule for the immune system.
The glucagon like peptide-1 receptor (GLPr) is a G proteincoupled receptor (GPCR) that mediates the action of GLP-1, a peptide hormone. The activated receptor  has a strong effect  on the management of type 2 diabetes mellitus and obesity, including glucose homeostasis and regulation of gastric motility and food intake.
The three-dimensional structure of proteins is represented in a variety of conformations. This image is based on the ribbon structure of a protein. It is suitable for biology notebooks and book covers.\nThis image has not been created by AI.
Prions are misfolded proteins with the ability to transmit their misfolded shape onto normal variants of the same protein. They characterize several fatal and transmissible neurodegenerative diseases in humans and many other animals.
Prions do not contain genetic materials, Unlike other infectious agents, such as bacteria, viruses, and fungi. Isolated prions in the dark background 3d rendering
Chain of Amino Acid. Proteins consist of one or more chains of amino acids called polypeptides
ATP Synthase Protein - 3d rendered image. Medical microbiology concept.  Structure and conformational states of the bovine mitochondrial ATP (Adenosine triphosphate) synthase. Chemical energy is synthesized in eukaryotic cells primarily. Hydrolase. Hologram view. HUD, FUI
Recombinant human insulin. 3d cartoon model based on protein data bank
Frataxin (human) mitochondrial protein. Reduced expression causes Friedreich's ataxia. 3D illustration. Cartoon & wireframe representation.
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer,lipid bi-layer cell anatomy
A ball-and-stick plus ribbons molecular model of the hormone Orexin, also known as Hypocretin.  Orexin is involved in the regulation of the sleep/wake cycle and it stimulates apetite, wakefulness and energy expenditure. It has been linked with Alzheimer's disease.  Isolated on white.
HER2 (light blue) and HER3 form a potent pro-oncogenic heterocomplex.  They play a  crucial role in cellular proliferation, survival, and differentiation.
Molecular Model of Human Insulin with disulfide bonds shown.
3D cartoon model, secondary structure color scheme, PDB 2rfn, white background
Segment of human collagen isolated on a white background
DNA Helix - 3d rendered image. Genetic research concept. Complex spiral structure illustration. Medical, science, genetic biotechnology, gene cell, chromosome idea. DNA strands on dark background . Science nanotechnology.
Chain of amino acid or biomolecules called protein - 3d illustration
Aerial view of a winter landscape with wind turbines and ribbons flowing through
Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.
AI will enable advances in genetic modification technology to treat intractable diseases.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
A ball and stick + ribbons model of beta-secretase - a protein that is important in forming healthy peripheral nerve cells, but is also involved in the onset of Alzheimer's disease.
3D cartoon model, secondary structure color scheme, pdb 7tvg, white background
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.
C-reactive protein (CRP), an annular (ring-shaped), protein found in blood plasma. It is thought to assist in complement binding to foreign and damaged cells and enhances phagocytosis by macrophages.
Immunoglobulin G (IgG) - 3d rendered image. Microbiology illustration  the structure of an antibody. The Y-shaped structure. IgG is the most common type of antibody.
Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.
Computer generated 3D abstract forms.
Interleukin 4 is a key regulator of the immune system and plays an important role in the development of allergic hypersensitivity, exacerbating allergic and asthmatic symptoms. Interleukin 4 is a peptide with 125 aminoacids. The IL-4 receptor consists of an alfa (light violet) and a gamma chain. Source: PDB entry 3bpl
3d Render DNA Transparent Blue & Red, Science and Medicine Concept, Clipping Path
Free Images: "bestof:PDB 1dip EBI.jpg Coiled coil proteins Parallel coiled-coil Delta-sleep-inducing peptide immunoreactive peptide Delta-sleep-inducing peptide immunoreactive"
TOM complex.svg
IFT particle chlamydomonas.svg
Intermediate filament.svg
P450cycle.svg
PDB 1dip EBI.jpg
PDB 1buu EBI.jpg
PDB 1kww EBI.jpg
PDB 1rtm EBI.jpg
PDB 1fif EBI.jpg
PDB 1afb EBI.jpg
PDB 2kmb EBI.jpg
PDB 1kwt EBI.jpg
PDB 1kwu EBI.jpg
PDB 1kwx EBI.jpg
PDB 1kwz EBI.jpg
PDB 1kwy EBI.jpg
PDB 3kmb EBI.jpg
PDB 1kx0 EBI.jpg
PDB 1kwv EBI.jpg
PDB 1fih EBI.jpg
PDB 4kmb EBI.jpg
PDB 1afa EBI.jpg
PDB 1bch EBI.jpg
PDB 1kmb EBI.jpg
PDB 1afd EBI.jpg
PDB 1bcj EBI.jpg
PDB 1kx1 EBI.jpg
PDB 1hup EBI.jpg
PDB 1pwb EBI.jpg
PDB 2os9 EBI.jpg
PDB 1pw9 EBI.jpg
PDB 2orj EBI.jpg
PDB 2ork EBI.jpg
PDB 2ggx EBI.jpg
PDB 2ggu EBI.jpg
PDB 1b08 EBI.jpg
PDB 1m7l EBI.jpg
PDB 1r13 EBI.jpg
PDB 1r14 EBI.jpg
PDB 1htn EBI.jpg
PDB 1ca9 EBI.jpg
PDB 2bni EBI.jpg
PDB 2ccn EBI.jpg
PDB 1uo4 EBI.jpg
PDB 1piq EBI.jpg
PDB 1zii EBI.jpg
PDB 2zta EBI.jpg
PDB 1zik EBI.jpg
PDB 2ccf EBI.jpg
PDB 2ahp EBI.jpg
PDB 1uo3 EBI.jpg
PDB 1w5k EBI.jpg
PDB 1uo2 EBI.jpg
PDB 2cce EBI.jpg
PDB 1unu EBI.jpg
PDB 1unt EBI.jpg
PDB 1w5j EBI.jpg
PDB 1unw EBI.jpg
PDB 2dgc EBI.jpg
PDB 1u9g EBI.jpg
PDB 1zil EBI.jpg
PDB 2b22 EBI.jpg
PDB 1u9h EBI.jpg
PDB 1u9f EBI.jpg
PDB 1uo5 EBI.jpg
PDB 1w5i EBI.jpg
PDB 1w5g EBI.jpg
PDB 1unv EBI.jpg
PDB 1uny EBI.jpg
PDB 1w5l EBI.jpg
PDB 1uo0 EBI.jpg
PDB 1unz EBI.jpg
PDB 1unx EBI.jpg
PDB 1uo1 EBI.jpg
PDB 1w5h EBI.jpg
PDB 1dgc EBI.jpg
PDB 1ysa EBI.jpg
PDB 2g9j EBI.jpg
PDB 1zta EBI.jpg
PDB 2hy6 EBI.jpg
PDB 2b1f EBI.jpg
PDB 1gcm EBI.jpg
PDB 1ij0 EBI.jpg
PDB 1rb5 EBI.jpg
PDB 1ij2 EBI.jpg
PDB 1rb4 EBI.jpg
PDB 1ij3 EBI.jpg
PDB 1ce9 EBI.jpg
PDB 1rb6 EBI.jpg
PDB 1ij1 EBI.jpg
PDB 1kd8 EBI.jpg
PDB 1zim EBI.jpg
PDB 1gcl EBI.jpg
PDB 1zij EBI.jpg
PDB 1kdd EBI.jpg
PDB 1kd9 EBI.jpg
PDB 1ce0 EBI.jpg
PDB 1rb1 EBI.jpg
PDB 1swi EBI.jpg
PDB 1d66 EBI.jpg
Terms of Use   Search of the Day