Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
A ball and stick model of Human Insulin. Isolated on black.
Aztreonam is an inhibitor of resistant bacteria from Acinetobacter species.  Aztreonam (orange) inhibits the bacterial enzyme beta-lactamase (blue) that is responsible for the antibiotic resistance.
3D cartoon and Gaussian surface models, PDB 2zva, white background
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
organic chemistry, model of the protein molecule - illustration of a biological particle
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer,lipid bi-layer cell anatomy
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.
Ribonucleic acid strands consisting of nucleotides important for protein bio-synthesis - 3d illustration
Lipid bilayer cell membrane with membrane and intracellular receptors
Dengue virus cell. 3D Render
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.
Abstract Lactobacillus Bulgaricus Bacteria - 3d rendered microbiology image. Medical research, health-care concept. SEM (TEM)scanning view
3D cartoon and Gaussian surface models, PDB 2j0D, white background.
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
3d render of the epidermal growth factor (EGF) receptor
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.
Evolution and Mystery of Life: Mollusks Living in Water
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Structure of Escherichia Coli
Frataxin (human) mitochondrial protein. Reduced expression causes Friedreich's ataxia. 3D illustration. Cartoon & wireframe representation.
A model of a nucleosome. Isolated on black.
3d rendering of ubiquitin is attached to target proteins by a process called ubiquitination
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer
3D cartoon and Gaussian surface models, PDB 6h5i, 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.
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
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.
Cell Membrane structure in motion
plant Leaf of Mentha Haplocalyx T.S. under light mircoscope with white background
Free Images: "bestof:PDB 1z9k EBI.jpg Membrane and cell surface proteins and peptides Bacterial photosystem II reaction centre L and M subunits Bacterial photosystem II reaction"
P450cycle.svg
Luciferin bacterial reaction.svg
Togni s reagent II reaction 01.svg
Togni s reagent II reaction 02.svg
Togni s reagent II reaction 03.svg
Reaction of Propan-1-ol and Copper(II) oxide to Propionaldehyde.svg
Reaction of Propan-1-ol and Copper(II) oxide to Propionaldehyde 2.svg
Fotoukład 2.svg
FMH2-Bioluninescence.svg
PS-Hemmer.svg
Norrish typeII reaction.svg
Ferrier carbocyclization.svg
Alpha oxidation part II.svg
Prokaryote cell diagram international.svg
Bischler-Napieralski Isoquinoline synthesis mechanism II.svg
Semnalizare engl.svg
Hepatitis B virus v2.svg
Taste bud cell types.svg
Deepwater Horizon oil spill recovery context numbered.svg
PDB 1z9k EBI.jpg
PDB 2gnu EBI.jpg
PDB 2hg9 EBI.jpg
PDB 2hhk EBI.jpg
PDB 2boz EBI.jpg
PDB 2hh1 EBI.jpg
PDB 2bns EBI.jpg
PDB 2hg3 EBI.jpg
PDB 2bnp EBI.jpg
PDB 2hj6 EBI.jpg
PDB 2hit EBI.jpg
PDB 2gmr EBI.jpg
PDB 3d38 EBI.png
PDB 1rzh EBI.jpg
PDB 1qov EBI.jpg
PDB 1ry5 EBI.jpg
PDB 1e6d EBI.jpg
PDB 1rg5 EBI.jpg
PDB 1aij EBI.jpg
PDB 1ogv EBI.jpg
PDB 1rqk EBI.jpg
PDB 1kby EBI.jpg
PDB 1rzz EBI.jpg
PDB 1mps EBI.jpg
PDB 1dv3 EBI.jpg
PDB 1ds8 EBI.jpg
PDB 1dv6 EBI.jpg
PDB 1fnq EBI.jpg
PDB 1rgn EBI.jpg
PDB 1fnp EBI.jpg
PDB 1aig EBI.jpg
PDB 1pcr EBI.jpg
PDB 1s00 EBI.jpg
PDB 1jgz EBI.jpg
PDB 1rvj EBI.jpg
PDB 1e14 EBI.jpg
PDB 1jgy EBI.jpg
PDB 1jgw EBI.jpg
PDB 1umx EBI.jpg
PDB 1k6l EBI.jpg
PDB 1f6n EBI.jpg
PDB 1k6n EBI.jpg
PDB 1jgx EBI.jpg
PDB 1m3x EBI.jpg
PDB 1pst EBI.jpg
PDB 1pss EBI.jpg
PDB 1jh0 EBI.jpg
PDB 2rcr EBI.jpg
PDB 1yst EBI.jpg
PDB 4rcr EBI.jpg
PDB 1l9b EBI.jpg
PDB 1l9j EBI.jpg
PDB 2i5n EBI.jpg
PDB 1dxr EBI.jpg
PDB 6prc EBI.jpg
PDB 3prc EBI.jpg
PDB 1prc EBI.jpg
PDB 5prc EBI.jpg
PDB 2prc EBI.jpg
PDB 7prc EBI.jpg
PDB 1r2c EBI.jpg
PDB 1eys EBI.jpg
PDB 1jb0 EBI.jpg
PDB 2qpe EBI.png
PDB 3bvd EBI.png
PDB 2qpd EBI.png
PDB 1m56 EBI.jpg
PDB 1m57 EBI.jpg
PDB 1xme EBI.jpg
PDB 1ehk EBI.jpg
PDB 3dtu EBI.png
PDB 2gsm EBI.jpg
PDB 3ehb EBI.png
PDB 1h2s EBI.jpg
PDB 1h68 EBI.jpg
PDB 2f93 EBI.jpg
PDB 2f95 EBI.jpg
PDB 1gu8 EBI.jpg
PDB 1gue EBI.jpg
PDB 1jgj EBI.jpg
PDB 1qle EBI.jpg
Terms of Use   Search of the Day