Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
A ribbons model of Human Growth Hormone, also known as Somatotropin, with a translucent surface model.
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
3D cartoon and Gaussian surface models, PDB 6vg8, white background
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.
The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.
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
Nucleosome, molecular model. 3D illustration. The nucleosome consists of a DNA double helix wrapped around a core of histone proteins.
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer
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.
mRNA (multicoloured strand) is decoded in a ribosome to produce an aminoacid chain, that folds into a protein (red). tRNA (dark violet) molecules carry single aminoacids that are incoporated into the growing chain.
The androgen receptor (AR), also known as NR3C4 (nuclear receptor subfamily 3, group C, member 4), is a type of nuclear receptor that is activated by binding any of the androgenic hormones, including testosterone and dihydrotestosterone in the cytoplasm and then translocating into the nucleus. 3D cartoon model with the differently colored elements of the secondary structure, 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.
Alpha-tubulin 3C, a protein associated with the genetic diseases Clouston hidrotic ectodermal dysplasia and Kabuki syndrome. 3d rendering.
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.
Recombinant human insulin. 3d cartoon model based on protein data bank
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
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.
Frataxin (human) mitochondrial protein. Reduced expression causes Friedreich's ataxia. 3D illustration. Cartoon & wireframe representation.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
AI will enable advances in genetic modification technology to treat intractable diseases.
The intermembrane transporter of the Gram-negative bacterium Acinetobacter baylyi transports a lipopolysaccharide (orange) through the inner membrane consuming ATP (red)
DNA A-T Pair
protein G−DNA conjugate an antibody to the intended area on the surface of bioassay chips or particles; 3d rendering
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.
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.
Aromatase (estrogen synthase) enzyme. Protein responsible for the key step in the synthesis of estrogens. 3D illustration. Cartoon representation.
Ferritin is a protein that contains iron and is the primary form of iron stored inside of cells. 3D cartoon model, PDB 4y08, white background
Multicolored flowing and interweaving fusion of spheres 3D abstract concept.
A  RNA polymerase (yeast) is composed of several proteins. It unwinds DNA strands (violet) and builds RNA (red) out of the nucleotides uridine, adenosine, cytlidine and guanosine monophosphate.
Computer generated 3D abstract forms.
Free Images: "bestof:PDB 1rgd EBI.jpg Small proteins Glucocorticoid receptor-like DNA-binding domain Glucocorticoid receptor-like DNA-binding domain Nuclear receptor Glucocorticoid"
ZK 216348 structure.svg
Trifluoroisopropanolamine SEGRA.svg
A 276575 structure.svg
RU 24858 skeletal.svg
MK-5932 skeletal.svg
Octahydrophenanthrene-2,7-diol SEGRA.svg
Mapracorat skeletal.svg
Notable mutations.svg
CD8 receptor.svg
5HT1A-schema.svg
Steatosis.svg
Hyponatraemia Causes.svg
Insulin glucose metabolism ZP.svg
Insulin glucose metabolism ZP-ca.svg
Radiation symbol alternate.svg
Bisphenol A diglycidyl ether 200.svg
Plant cell structure svg labels.svg
Hepatitis B virus v2.svg
PDB 1rgd EBI.jpg
PDB 1by4 EBI.jpg
PDB 1ynw EBI.jpg
PDB 1hcp EBI.jpg
PDB 1r0o EBI.jpg
PDB 1r4r EBI.jpg
PDB 2gda EBI.jpg
PDB 1hra EBI.jpg
PDB 1a6y EBI.jpg
PDB 1ga5 EBI.jpg
PDB 1hlz EBI.jpg
PDB 1kb2 EBI.jpg
PDB 1kb4 EBI.jpg
PDB 1kb6 EBI.jpg
PDB 1r4i EBI.jpg
PDB 1dsz EBI.jpg
PDB 2nll EBI.jpg
PDB 1rxr EBI.jpg
PDB 1hcq EBI.jpg
PDB 1lat EBI.jpg
PDB 1glu EBI.jpg
PDB 2han EBI.jpg
PDB 1r0n EBI.jpg
PDB 1cit EBI.jpg
PDB 1lo1 EBI.jpg
PDB 1r4o EBI.jpg
PDB 1gdc EBI.jpg
PDB 6gat EBI.jpg
PDB 1pzw EBI.jpg
PDB 1qli EBI.jpg
PDB 1u5s EBI.jpg
PDB 1wig EBI.jpg
PDB 2cup EBI.jpg
PDB 2co8 EBI.jpg
PDB 1x6a EBI.jpg
PDB 1uw0 EBI.jpg
PDB 1xx6 EBI.jpg
PDB 2das EBI.png
PDB 7gat EBI.jpg
PDB 5gat EBI.jpg
PDB 4gat EBI.jpg
PDB 1gat EBI.jpg
PDB 1gau EBI.jpg
PDB 1ctl EBI.jpg
PDB 1ibi EBI.jpg
PDB 1cxx EBI.jpg
PDB 1iml EBI.jpg
PDB 2d8x EBI.jpg
PDB 2cor EBI.jpg
PDB 1g47 EBI.jpg
PDB 1rut EBI.jpg
PDB 1m3v EBI.jpg
PDB 2d8z EBI.jpg
PDB 1x4l EBI.jpg
PDB 2cur EBI.jpg
PDB 2d8y EBI.jpg
PDB 2cuq EBI.jpg
PDB 2dar EBI.jpg
PDB 1x3h EBI.jpg
PDB 2dlo EBI.jpg
PDB 2dj7 EBI.jpg
PDB 1x64 EBI.jpg
PDB 2ds5 EBI.jpg
PDB 2ds8 EBI.jpg
PDB 2ds6 EBI.jpg
PDB 1tjl EBI.jpg
PDB 1xbt EBI.jpg
PDB 2orv EBI.jpg
PDB 2b8t EBI.jpg
PDB 2fif EBI.jpg
PDB 2fid EBI.jpg
PDB 2c7n EBI.jpg
PDB 2c7m EBI.jpg
PDB 3gat EBI.jpg
PDB 2gat EBI.jpg
PDB 1gnf EBI.jpg
PDB 1b8t EBI.jpg
PDB 1a7i EBI.jpg
PDB 2cu8 EBI.jpg
PDB 1nyp EBI.jpg
PDB 1j2o EBI.jpg
PDB 1v6g EBI.jpg
Terms of Use   Search of the Day