Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
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.
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.
Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.
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.
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
Molecular Model of Infliximab, or Remicade, a monoclonal antibody against tumour necrosis factor alpha (TNF-α), which is used to treat autoimmune diseases
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.
Recombinant human insulin. 3d cartoon model based on protein data bank
3D cartoon and Gaussian surface models. PDB 2aai, white background.
Rendered Remdesivir molecule in 3D, an experimental drug from Gilead, used to cure the first case of 2019-nCoV in the United States (for a patient at Seattle, Washington). The model showed accurate atom connection and stereochemistry, based on the chemical structure available in public space from U.S. National Library of Medicine, which was professionally checked. Color symbols - green=carbon, red=oxygen, blue=nitrogen, white=hydrogen, purple=phosphorus
Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.
Freshness capsule
PETase (left) degrades  polyethylene terephtalate (PET) into monohydroxyethyl terephthalate (MHET) and MHETase degrades MHET ethylene glycol (EG) and terephthalic acid (TPA). The substrates in the binding sites are depicted in red.
A ball-and-stick 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.
Maltose or maltobiose or malt sugar is a disaccharide formed from two units of glucose joined with an alpha bond. 3d illustration
Fictitious molecule model inside red and blue pill isolated on white.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 4ci9, white background
DNA A-T Pair
Aromatase (estrogen synthase) enzyme. Protein responsible for the key step in the synthesis of estrogens. 3D illustration. Cartoon representation.
Freshness capsule
Abstract Pink And Green Knot
A ball and stick model of a molecule of Human Glucagon, a hormone produced in the pancreas and used by the body to raise levels of glucose in the blood. Glucagon worksin the opposite manner to Insulin, which lowers levels of glucose in the blood - together they work to keep glucose levels stable.
Remdesivir is a broad-spectrum antiviral medication, it is a specific treatment for COVID-19. 3d illustration
Scientific background. 3D render.
3D cartoon and Gaussian surface models, PDB 3hg3, white background
Model of human Insulin, a hormone to regulate carbohydrate and fat metabolism
Taq polymerase (Thermus aquaticus polymerase) enzyme bound to DNA, 3D rendering. Protein used in PCR (polymerase chain reaction).
Abstract geometric shape
Organic shape 3d virus model isolated on black background, medical 3d rendering illustration
A model of a molecule of arginine, an amino acid. Amino acids are the building blocks of proteins and have many functions in metabolism. In particular, Arginine has an important function in the immune system, wound healing and cell division.
Free Images: "bestof:PDB 1bpr EBI.jpg All beta proteins Heat shock protein 70kD HSP70 peptide-binding domain Heat shock protein 70kD HSP70 peptide-binding domain Heat shock protein"
nest-egg-bird-food-protein-basket-716886.jpg
wood-holzschlag-firewood-forest-453825.jpg
wood-timber-industry-firewood-662879.jpg
egg-fried-fry-attempt-sun-heat-1355704.jpg
steak-beef-meat-food-grilled-1076665.jpg
salmon-raw-grilled-fish-seafood-201017.jpg
Project_365_#201:_200713_Hot_Property!.jpg
Anglers using electro shock fishing techniques.jpg
Alton_Lee_carries_a_shock_of_wheat_across_the_broad_fields_of_the_Saugstad_farm_where_he_works_from_sunrise_to_long..._-_NARA_-_196265.jpg
light-abstract-fire-heat.jpg
Early_Bumblebee_(Bombus_pratorum)_landing_on_Echinacea_Flower_(Echinacea_purpurea)..png
111215-Z-NI803-071.jpg
Old_railway_wagon..jpg
Into_the_fight.jpg
Bombus_fraternus,_f,_face,_Charleston_Co.,_SC_2016-09-13-11.21.jpg
Bombus_fraternus,_f,_back,_Charleston_Co.,_SC_2016-09-13-11.14.jpg
Stingless_bee_1,_f,_side,_peru_2014-07-30-12.46.57_ZS_PMax.jpg
Stingless_bee_1,_f,_face,_peru_2014-07-30-12.33.22_ZS_PMax.jpg
P6_Utanka_and_The_Earrings.png
egg-egg-carton-protein-proteins-319544.jpg
fried-eggs-eat-egg-food-snack-547389.jpg
ham-sausage-turkey-ham-turkey-meat-74197.jpg
scrambled-eggs-egg-eat-breakfast-1042653.jpg
scrambled-eggs-breakfast-plate-939251.jpg
veal-shank-meat-veal-steakes-haxe-74307.jpg
meat-pork-pork-belly-tuna-belly-74214.jpg
marrowbone-beef-meat-bone-raw-eat-897982.jpg
beef-meat-bone-raw-eat-food-red-897977.jpg
deep-fat-frying-sear-fry-oil-74242.jpg
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
egg-smiling-smile-happy-yellow-24404.svg
Stat domain structure (zh-cn).svg
Complement pathway.svg
Hepatitis B virus v2.svg
Design_Analysis_of_the_F6F-5_Hellcat.png
Shock-cell2.svg
Main protein structure levels gl.svg
Protein primary structure gl.svg
After the Heat of the Day - Walter Withers (1891).jpg
Design_Analysis_of_the_Boeing_B-17G_Flying_Fortress.png
gauguin_in_heat_pigs_1888.jpg
Design_Analysis_of_the_P-38_Lightning.png
Proteinoxidation 03.svg
Gasturbine-Warmtepomp.svg
Inteiner.svg
WikF1-en.svg
Design_Analysis_of_the_Lockheed_PV-1_Ventura.png
Ribosome mRNA translation gl.svg
Exchangerflow.svg
Exchangerflow ro.svg
Proteinstructur-ar.svg
Simple distillation apparatus.svg
PhOH-CHCl3 extraction.svg
Warmtepomp-schema.svg
Intermediate filament uk.svg
Simple distillation apparatus (bn).svg
Taxol structure.svg
Inertial confinement fusion.svg
Jakstat pathway PIAS.svg
Acides aminés propriétés diagramme Venn.svg
US-DeptOfAgriculture-Seal.svg
US-DeptOfAgriculture-Seal2.svg
Circuit warmtepomp.svg
Cell membrane detailed diagram id.svg
Thyroid hormone synthesis-it.svg
Thyroid hormone synthesis.svg
Attack_on_carrier_USS_Franklin_19_March_1945.jpg
Notable mutations.svg
Epicocconone protein.svg
Main protein structure levels pl - secondary structure.svg
Main protein structure levels pl.svg
Protein primary structure zh (zh-tw).svg
PKARII.svg
Proteinoxidation.svg
Glicoprotein.svg
Laminin sketch.svg
Proteinoxidation 02.svg
Primärstruktur von Proteinen2.svg
Beta sheet bonding antiparallel-color.svg
Beta sheet bonding parallel-color.svg
AminoAcid length distribution 2010.svg
IFT particle chlamydomonas.svg
Pseaa figure1.svg
ProteinQS.svg
Beta-Faltblatt.svg
TOM complex.svg
Lipid raft organisation scheme.svg
Intermediate filament.svg
Ribosome mRNA translation tr.svg
Molbio-Header-2.svg
Insulin glucose metabolism ZP.svg
Insulin glucose metabolism ZP-ca.svg
Molbio-Header.svg
Cell membrane detailed diagram blank.svg
PDB 1bpr EBI.jpg
PDB 1dkz EBI.jpg
PDB 1dkx EBI.jpg
PDB 1dg4 EBI.jpg
PDB 1yuw EBI.jpg
PDB 7hsc EBI.jpg
Terms of Use   Search of the Day