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A ribbons model of Human Growth Hormone, also known as Somatotropin, with a translucent surface model.
3D cartoon and Gaussian surface models. PDB 2aai, white background.
Frataxin (human) mitochondrial protein. Reduced expression causes Friedreich's ataxia. 3D illustration. Cartoon & wireframe representation.
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.
Nirmatrelvir inhibits the 3C-like protease of the SARS-CoV 2 virus. The coronavirus 3CL hydrolase enzyme, also known as the main protease, is essential for the maturation of the virus.
DNA A-T Pair
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
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
3D generated image
3D cartoon model, secondary structure color scheme, PDB 4krf, white background
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.
Gamma secretase protein complex. Multi-subunit intramembrane protease that plays role in processing of proteins. 3D illustration.
Rapamycin, also known as sirolimus is a macrolide compound that has immunosuppressant functions and prevents transplant rejection through the inhibition of  the protein complex mTORC1.
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.
Alpha-actinin 2, a protein which crosslinks filamentous actin molecules and titin molecules from adjoining sarcomeres at Z-discs, a function that is modulated by phospholipids. 3d rendering.
Dengue virus cell. 3D Render
3D cartoon and Gaussian surface models, chain id color scheme, PDB 5y0m, white background
Molecular Model of Cyclosporine, an immunosuppressant drug widely used in organ transplantation to prevent rejection.
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
A ribbons model of an antibody, also known as immunoglobin. The immune system produces antibodies (using white blood cells) which then identify and attack viruses and bacteria.
Beta-amyloid (Abeta) peptide, 3D rendering. Major component of plaques found in Alzheimer's disease. Cartoon representation.
Background created by fractal geometry.
Aztreonam (left, orange) inhibits the beta-lactamase from Acinetobacter species. Avibactam (red) inhibits the beta-lactamase (blue) of Clostridioides difficile.
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. Hologram view. SEM.
3D cartoon and Gaussian surface models, PDB 6p8e, white background
chromosome,Human genome concept
The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.
graphs and cells
Free Images: "bestof:PDB 1pys EBI.jpg All beta proteins OB-fold Nucleic acid-binding proteins Myf domain Domain B2 of PheRS-beta PheT Domain B2 of PheRS-beta PheT All alpha proteins"
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2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
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Princess Anne (ship) (LOC) (2163518012).jpg
San Antonio Aeroplane used for army messages (LOC) (2162709023).jpg
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pontormo_portrait_niccol_C3_B2_ardinghelli_c_1542.jpg
FOXA2-phylo.svg
dna-double-helix-science-rna-296744.svg
Greek lc alpha.svg
Greek lc beta.svg
Proteinoxidation 03.svg
Alpha lowercase.svg
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AlphaHelixSection (blue).svg
Alpha-D-Mannofuranose.svg
Alpha-D-Mannopyranose.svg
Beta-D-Glucopyranose.svg
Alpha-D-Altrofuranose.svg
Alpha-D-Altropyranose.svg
Alpha-D-Gulofuranose.svg
Alpha-D-Gulopyranose.svg
Alpha-D-Idofuranose.svg
Alpha-D-Idopyranose.svg
Alpha-D-Galactofuranose.svg
Alpha-D-Galactopyranose.svg
Alpha-D-Talofuranose.svg
Alpha-D-Talopyranose.svg
Alpha-D-Psicofuranose.svg
Alpha-D-Psicopyranose.svg
Alpha-D-Sorbofuranose.svg
Alpha-D-Sorbopyranose.svg
Alpha-D-Tagatofuranose.svg
Alpha-D-Tagatopyranose.svg
Alpha-D-Arabinofuranose.svg
Alpha-D-Arabinopyranose.svg
Alpha-D-Lyxofuranose.svg
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