Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
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 molecular surface models, chain id color scheme, putative membrane shown, pdb 1l7v, white background
Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
Lily leaf c.s. under microscope
DNA A-T Pair
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
Focal nodular hyperplasia (FNH) is a benign liver lesion that is composed of a proliferation of hyperplastic hepatocytes surrounding a central stellate scar. Typically, FNH is a solitary lesion that is more commonly seen in women.
Aerial view of loyster farm by Ardara, County Donegal - Ireland.
Cells in the body examined by endoscope
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
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background
plant Zea Stem C.S. under light mircoscope with white background
Acetylcholine receptors in the lipid layer of cell membrane.
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
Coxsackie virus internal structure, 3d illustration set isolated on white
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
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, PDB 1j7n, chain id color scheme, white background
Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.
Coloured transmission electron micrograph (TEM) of a small arteriole showing, from lumen: endothelium (magenta), discontinuous internal elastic lamina (blue), cross-sectioned smooth muscle fibers (cytoplasm, red, nucleus, light yellow) and connective tissue of adventitia (green).
Shiny artificial molecular structure in many colors. Horizontal composition, isolated on black background.
Backgrounds of Bacteria and Mold under the microscope in Lab.
Liver Fluke Section under light microscope with white background
p53 (blue) tagged with ubiquitin (yellow) is degraded into small peptides by a proteasome (violett). p53 prevents cancer formation and acts as a guardian of the genome. Mutations in the p53 gene contribute to about half of the cases of human cancer.
Slice of natural crystal for patterns and textures use with high resolution.
3D cartoon and Gaussian surface models, PDB 6gu2, white background
Overhead aerial drone view of oyster farm racks at low tide, flying at a low altitude to be able to see the detail of the oyster racks and seaweed. Located in a tidal estuary in Sutherland, Scotland. the low tides enable workers to access the racks for turning the oysters as they grow. Oysters have been farmed for many hundreds of years using this method. Seaweed has grown around the metal lines of racks.
Free Images: "bestof:PDB 2pon EBI.png Membrane and cell surface proteins and peptides Toxins membrane translocation domains Bcl-2 inhibitors of programmed cell death Bcl-2"
Insulin glucose metabolism ZP.svg
Insulin glucose metabolism ZP-ca.svg
Cell membrane detailed diagram blank.svg
Cell membrane detailed diagram en.svg
Adherens Junctions structural proteins.svg
Exocytosis types.svg
Adherens Junctions structural proteins-LangNeutral.svg
Endocytosis types.svg
Endocytosis types-fr.svg
CD8 receptor.svg
Insulin glucose metabolism ZP (it).svg
Insulin glucose metabolism ZP-he.svg
Lipid raft organisation scheme.svg
Endocytoza typy.svg
Insulin glucose metabolism ZP (ru).svg
Cellular tight junction keys.svg
Cell membrane detailed diagram es.svg
Cell membrane detailed diagram fr.svg
Cell membrane detailed diagram pt.svg
Cell membrane detailed diagram zh.svg
Cell membrane detailed diagram id.svg
Cell membrane detailed diagram ua.svg
Cell membrane detailed diagram lv.svg
Cell membrane detailed diagram ca.svg
Cell membrane detailed diagram et.svg
Cell membrane detailed diagram de.svg
Cell membrane detailed diagram pl.svg
Cell membrane detailed diagram nl.svg
Scheme simple diffusion in cell membrane-zh (zh-cn).svg
Scheme facilitated diffusion in cell membrane-zh.svg
Scheme simple diffusion in cell membrane-zh (zh-tw).svg
Scheme facilitated diffusion in cell membrane-es.svg
Scheme simple diffusion in cell membrane-en.svg
Scheme simple diffusion in cell membrane-pl.svg
Scheme facilitated diffusion in cell membrane-zh (zh-tw).svg
Scheme facilitated diffusion in cell membrane-en.svg
Scheme simple diffusion in cell membrane-es.svg
Scheme simple diffusion in cell membrane-de.svg
Scheme facilitated diffusion in cell membrane-ca.svg
Scheme facilitated diffusion in cell membrane-eo.svg
Scheme simple diffusion in cell membrane-de 02.svg
Scheme facilitated diffusion in cell membrane-fr.svg
Scheme simple diffusion in cell membrane-fr.svg
Scheme simple diffusion in cell membrane-ca.svg
biology-cell-diagram-science-41522.svg
bacterium-nucleoid-cytoplasm-cell-307660.svg
Bacteria.svg
PEM fuelcell.svg
Trachelomonas lorica.svg
Euglenid pellicula scheme.svg
Hodgkin-huxley-circuit.svg
PEM fuel cell.svg
drawing-nerve-cell-neurone-730755.png
Diagram human cell nucleus numbered version.svg
drawing-nerve-cell-neurone-732830.png
drawing-nerve-cell-neurone-730778.jpg
Frap diagram.svg
Bilayer hydration profile.svg
Supported bilayer.svg
Lipid vesicles.svg
Prokaryote cell diagram international.svg
Fagocytoza.svg
Black lipid membrane.svg
Animal Cell.svg
Desmosome cell junction pl.svg
Plant cell wall nl.svg
5HT1A-schema.svg
Lipid unsaturation effect.svg
Lipid vesicle vs soap bubble.svg
Lipid bilayer fusion.svg
Scheme sodium-potassium pump-ja.svg
Plant cell wall diagram-en.svg
Stat domain structure (zh-cn).svg
Pore schematic.svg
Lipid unsaturation effect pt.svg
Mauthner Cell axon cap schematic.svg
Osmotic pressure on blood cells diagram.svg
Canais.svg
Scheme secundary active transport-en.svg
Desmosome cell junction it.svg
Desmosome cell junction en.svg
Lipid unsaturation effect es.svg
Scheme sodium-potassium pump-it.svg
Scheme sodium-potassium pump-de.svg
Scheme sodium-potassium pump-en-2.svg
Scheme sodium-potassium pump-zh.svg
Scheme sodium-potassium pump-ca.svg
Scheme sodium-potassium pump-el.svg
Scheme sodium-potassium pump-en.svg
Animal mitochondrion diagram it.svg
Schema pflanzliche Zellwand.svg
Plant cell wall diagram mk.svg
Scheme sodium-potassium pump-bs.svg
Semnalizare engl.svg
Scheme sodium-potassium pump-he.svg
Scheme sodium-potassium pump-zh (zh-tw).svg
Plant cell structure svg labels.svg
Hepatitis B virus v2.svg
Scheme sodium-potassium pump-pl.svg
Scheme secundary active transport-heb.svg
Terms of Use   Search of the Day