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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.
Nucleosome, molecular model. 3D illustration. The nucleosome consists of a DNA double helix wrapped around a core of histone proteins.
Diffuse large B-cell lymphoma, or DLBCL, is a cancer that starts in white blood cells called lymphocytes.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 5y0m, white background
Inside protein molecule
Biological protein and molecule, 3d rendering. 3D illustration.
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.
DNA close-up, DNA Molecule Model, DNA Strands, DNA animation
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
Hemp Floral Wax in a petri dish
B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background
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
DNA Strings On White Background. Medical Research, Gene Engineering And Biotechnology Concept
Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
3D CG rendered image of scientifically accurate Feline Panleukopenia Virus (cat distemper virus) Capsid Structure based on PDB : 1FPV (surface style)
This footage shows the translation initiation complex, which consists of the ribosomal small subunit, transfer RNA (tRNA), and translation initiation factors. The golden ribbon represents the RNA.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Neuroendocrine carcinoma well differentiated (carcinoid) rectum with immunostain synaptophysin
3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background
DNA A-T Pair
Biological protein and molecule, 3d rendering. 3D illustration.
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
Quantum Gravity 3d rendered image of a comprehensive exploration of Quantum Gravity theories. String theory, loop quantum gravity (LOG), causal dynamical triangulation, twistor theory, gravitational waves, spacetime, gravity waves, quantum mechanics, quantum entanglement concepts.
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
Slice of natural crystal for patterns and textures use with high resolution.
3D cartoon and Gaussian surface models, PDB 2zdu, white background
Molecular model of amylose, one of the two sugar components in starch
Free Images: "bestof:PDB 1k8g EBI.jpg All beta proteins OB-fold Nucleic acid-binding proteins Single strand DNA-binding domain SSB Telomere end binding protein alpha subunit EBI"
2ph1 pdb gallery nucleotide binding-protein-2 (MinD homolog).svg
Complement pathway.svg
Stat domain structure (zh-cn).svg
Proteinoxidation 03.svg
Constant-k Filter Transmission Parameters.svg
Constant-k Filter Gain with Multiple Half-Sections.svg
Human genome by functions.svg
Engineered monoclonal antibodies.svg
Hepatitis B virus v2.svg
P450cycle.svg
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