Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
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.
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.
3D cartoon and Gaussian surface models, PDB 6vg8, white background
A space-filling molecular model of collagen, a fibrous protein that provides structural support in animals. It has a distinctive triple helix structure. Isolated on black.
c-Myc and Max transcription factors bound to DNA. 3D illustration. Atoms shown as spheres with conventional color coding.
DNA A-T Pair
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Neuroendocrine carcinoma well differentiated (carcinoid) rectum with immunostain synaptophysin
The prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3). The active site is the big cavity on the lower right side of the molecule
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.
CD47 also known as integrin associated protein is a transmembrane protein that in humans is encoded by the CD47 gene. CD47 belongs to the immunoglobulin superfamily and partners with membrane integrins and also binds the ligands thrombospondin-1 and signal-regulatory protein alpha. 3D cartoon and Gaussian surface models, chain id color scheme, based on PDB 2jjt, white background
A ball and stick model of one of the proteins which form the fibres of spider's silk.
Glucose-6-phosphate dehydrogenase (G6PD) protein. Enzyme of the pentose phosphate pathway that generates co-enzyme NADPH. 3D illustration.
Inside protein molecule
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Isolated cholesterol molecule between phospholipid molecules membrane 3d rendering
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.
The structure of the protein molecule, tumor marker glioblastoma. X-ray crystalline model of the protein encoded by the MELK gene. 3D rendering.
3D cartoon and Gaussian surface models. PDB 3kqg, chain id color scheme, white background.
A space-filling model of Human Growth Hormone, also known as Somatotropin.
Indoleamine 2,3 dioxygenase 1 (IDO1) protein. Tryptophan catabolic enzyme of the kynurenine pathway. 3D illustration.
Afamelanotide is a synthetic peptide stimulating hormone used to prevent skin damage from the sun. 3d illustration
Isolated Proteasome with protein conjugated with ubiquitin 3d rendering
Avibactam is a diazobicyclooctane inhibitor of gram-negative and gram-positive bacteria.  Avibactam (red) inhibits the bacterial enzyme beta-lactamase (blue) of Clostridioides difficile.
Calcium-binding atopy-related autoantigen 1, a protein that in humans is encoded by the CBARA1 gene.  A calcium binding atopy-related autoantigen. 3d rendering.
3D cartoon and Gaussian surface models, chain id color scheme, PDB 4ci9, white background
A ribbons molecular model of ricin, an extremely potent protein toxin extracted from castor beans.
Bovine beta-lactoglobulin protein, 3D structure. Major whey protein, present in cow milk. Important food allergen.
Molecular model of Thymine, 1 of 4 nucleobases to form DNA
Free Images: "bestof:PDB 1ufi EBI.jpg All alpha proteins ROP-like Dimerisation domain of CENP-B Dimerisation domain of CENP-B Dimerisation domain of CENP-B EBI License 1ufi November"
VSCOcam.jpg
VSCOcamStartup_Stock_PhotoProcessed_with_VSCOcam.jpg
industry-vintage-old-fabric.jpg
VSCOcam.jpg
Francisco Franco 1930.jpg
Flag of the USA 2005 1.jpg
Camera.jpg
Blueberry_Plant.jpg
Forest_Lake.jpg
Beach_with_People.jpg
Indoor_Escalator.jpg
Large_Waterfall.jpg
Terrain.jpg
Macro_of_Grass.jpg
Lost_Place_Beelitz_Public_Domain.jpg
Bicycle_in_City.jpg
Emu_Head.jpg
Yellow_Plant_Leaves.jpg
Person_Examining_Soil.jpg
Macro_Dew_Drops.jpg
Pregnant_woman.jpg
Boat_bows_(3).jpg
Vintage_Doorbell.jpg
Tower_Viewer.jpg
Boardwalk_on_a_Lake.jpg
Foggy_Forest.jpg
Hillside_Cottage_with_Vegetation.jpg
Yellow_Flowers.jpg
Two_Machine_Gears.jpg
Forest_with_Shrubs.jpg
Outdoor_Plant_in_Rain.jpg
Cityscape.jpg
Native_American_Dream_Catcher.jpg
Sparkling_Lights.jpg
Lavender_Flowers.jpg
Clouds_Over_Forested_Hills.jpg
Yellow_Autumn_Tree_Leaves.jpg
Field_of_Purple_Flowers.jpg
Rows_of_Green_Trees.jpg
Person_Walking_Through_a_Forest.jpg
Coffee_Filter.jpg
Donkey_on_a_Farm.jpg
Indoor_Architectural_Skylight.jpg
Small_White_Flowers.jpg
Female_Sitting_Outdoors_Viewing_a_Landscape.jpg
Green_Wooded_Path.jpg
Shipyard_Warehouse.jpg
Group_of_Clouds.jpg
Scenic_Hilly_Grasslands.jpg
TraarbaraGruzÅoseo.JPG
Village_by_a_Forest_with_Green_Plants.jpg
Wooden_Deck_Overlooking_a_Lake.jpg
Orange_Pumpkins.jpg
Green_Trees_Background.jpg
Smartphone_with_Earbuds.jpg
Geometric_Structure.jpg
Window_and_Lines.jpg
Minimalist_Chain.jpg
Tree_Limbs_in_Park.jpg
Tree_and_Sky_Background.jpg
Interior_of_Automobile.jpg
Fresh_Cherries.jpg
Evergreen_Forest.jpg
Female_Holding_a_Zenit_Camera.jpg
Dry_Leaves.jpg
Decorative_Door_Handle.jpg
Mist_by_Waterfalls.jpg
Green_Grass_Texture.jpg
Mountain_Landscape.jpg
Green_Grass_Texture.jpg
Person_Walking_on_Snowy_Landscape.jpg
Landscape_of_Ocean_Cliffs_with_Lighthouse.jpg
Grain_Fields.png
Sun_Shining_on_Green_Leaf.jpg
Cat's_Legs_and_Feet.jpg
Barstools_in_a_Restaurant_with_Image_of_Birds.jpg
Hiker_on_a_Hill_Overlooking_Clouds.jpg
Dragonfly_on_a_Leaf.jpg
Brown_Caribou_Walking_Through_a_Stream.jpg
Tree_Stump_in_Sunlight.jpg
Portrait_of_a_Bull.jpg
Sky_Before_Sunrise_with_Moon.jpg
Cityscape_by_Water.jpg
Ocean_Beach_with_Waves.jpg
Pine_Tree_Leaves_on_Tree.jpg
Single_Peach_Rose.jpg
Rows_of_Palm_Trees_on_a_Street.jpg
Tractor_Marks_in_a_Field_of_Grass.jpg
Green_Grass_by_Trees.jpg
Inside_Building_Looking_Up_at_Skylight.jpg
Moss-Covered_Ground_in_a_Forest.jpg
Yellow_Leaves_on_a_Tree.jpg
Snowflake_Holiday_Ornament.jpg
Macro_of_Seed_Heads.jpg
Waterfall_in_a_Forest.jpg
Floating_Lily_Pads.jpg
Tree_Branches_Under_Blue_Sky.jpg
Highway_Bridge_with_Signs.jpg
Hiking_on_Hilly_Terrain.jpg
Road_Over_a_Lake_Between_Mountains.jpg
Terms of Use   Search of the Day