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A ball and stick model of Human Insulin. Isolated on black.
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 2aai, white background.
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.
Inside protein molecule
3D rendering of alpha-synuclein protein aggregate
Nucleosome, molecular model. 3D illustration. The nucleosome consists of a DNA double helix wrapped around a core of histone proteins.
Covid-19 Coronavirus Variants Omicron Delta Gamma Beta Alpha Pandemic Virus Disease Mutation
3D CG rendered image of scientifically accurate Feline Panleukopenia Virus (cat distemper virus) Capsid Structure based on PDB : 1FPV (surface style)
Cells in the body examined by endoscope
The LDL-receptor (red) is a membrane protein found in almost every human cell. It binds to the apoprotein B100 from LDL-particles and mediates their internalization (endocytosis) in the cell. This occurs in almost all cells but mainly in the liver where it removes about 70 % of LDL from the circulation.
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.
B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
DNA close-up, DNA Molecule Model, DNA Strands, DNA animation
Liver Fluke Section under light microscope with white background
Biological protein and molecule, 3d rendering. 3D illustration.
DNA A-T Pair
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.
Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 5y0m, white background
Photomicrograph of rotifer. Rapidly rotating cilia at top of head, internal organs visible. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
Nucleosome structure. Structure of an oligonucleosome, showing the packaging of DNA in chromosomes. 3D illustration.
Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
Green algae cells background
Slice of natural crystal for patterns and textures use with high resolution.
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
This computer-generated image vividly illustrates the invasive Group A Streptococcal bacteria, as they would appear under a microscope. This visual representation helps to understand the microscopic world of Group A Streptococcus and its potential to cause serious diseases.
3D cartoon and Gaussian surface models, PDB 2zdu, white background
Photomicrograph of newly hatched freshwater leech. Note multiple eyes at head and second attachment sucker at tail. Body length approx. 3 mm. Live specimen. Wet mount, 5X objective, transmitted brightfield illumination.
Free Images: "bestof:PDB 2emt EBI.png All alpha proteins Acyl-CoA binding protein-like Second domain of FERM Second domain of FERM Radixin All beta proteins PH domain-like barrel PH"
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(Portrait_of_Art_Tatum,_Rochester,_N.Y.(?),_ca._May_1946)_(LOC)_(5148796890).jpg
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(Portrait_of_Sol_(Solomon)_Yaged,_Jimmy_Jones(?),_and_John_(O.)_Levy(?),_Jimmy_Ryan's_(Club),_New_York,_N.Y.,_between_1946_and_1948)_(LOC)_(5476590892).jpg
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(Portrait_of_Louis_Jordan,_Paramount_Theater(?),_New_York,_N.Y.,_ca._July_1946)_(LOC)_(4843749438).jpg
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Euryglossina,_u,_australia,_face_2014-11-01-21.30.28_ZS_PMax.jpg
(Portrait_of_Stan_Kenton,_Kai_Winding,_Eddie_Safranski,_Pete_Rugolo,_and_Shelly_Manne,_New_York,_N.Y.(?),_ca._Jan._1947)_(LOC)_(5020407572).jpg
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Lasioglossum_albipes,_m,_france,_sie_2014-11-02-00.52.45_ZS_PMax.jpg
Lasioglossum_albipes,_m,_france,_face_2014-11-02-00.43.10_ZS_PMax.jpg
Lasioglossum_albipes,_s,_france,_back_2014-11-02-01.07.36_ZS_PMax.jpg
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Open_Book.jpg
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Flowering barrel cacti with other wildflowers in desert.jpg
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Zebra_Dove.jpg
Barrel cactus a cactus in Anza Borrego desert cactus cacti.jpg
Barrel cactus on the Cabeza prieta national wildlife refuge.jpg
Close up of a flowering barrel cactus with its thorns.jpg
Ping purple flowering barrel cactus in the sonoran desert.jpg
Surfer crouches low in the barrel of a wave.jpg
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Fra_Angelico,_Fra_Filippo_Lippi,_The_Adoration_of_the_Magi.jpg
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St_Clair_Baths_looking_towards_Second_Beach_circa_1880.jpg
Insulin glucose metabolism ZP (it).svg
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Cappelaere Portrait Miss Haryett Howard.jpg
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