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Phenylalanine hydroxylase (PAH) (EC 1.14.16.1) is an enzyme that catalyzes the hydroxylation of the aromatic side-chain of phenylalanine to generate tyrosine. 3D cartoon and Gaussian surface models, chain id color scheme, based on PDB 2pah, white background.
Stem of Nerium indicum T.S. under light mircoscope with white background
Aerial view of loyster farm by Ardara, County Donegal - Ireland.
Bone marrow plasma cells .Plasma cell neoplasms are diseases in which the body makes too many plasma cells. Plasma cell neoplasms can be benign or malignant. Diagnosed with Immunostain CD138 positive.
Slime molds, as a group, are polyphyletic under the microscope for education.
Photomicrograph of flatworm,
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Close up of cristal beads
Coxsackie virus internal structure, 3d illustration set isolated on white
plant rape flower cross section under light mircoscope with white background
Internal structure of an animal cell, 3d rendering. Section view. Computer digital drawing.
Curly marble stone with fashion veins.
3D cartoon and Gaussian surface models, PDB 6gu2, white background
Abstract particles
Fluconazole is an antifungal medication used to treat fungal infections like candidiasis and mycosis. Fluconazole alters the active site of the lanosterol 14 alpha-demethylase preventing the demethylation of lanosterol, an essential step in the biosynthesis of ergosterol. Ergosterol plays an important structural role in the regulation of membrane fluidity and permeability. Source: PDB entry 5esf.
Modern abstract painting. Colorful flowing art painting. Geometric background.
Algaes under microscopic view
Intricate bubble texture macro in bright colors for abstract background. Liquid bubbles lit from below with colors injected into the liquid as a design or art abstract.
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).
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 7t3a, white background
Photomicrograph of rotifer. Rapidly rotating cilia at top of head, internal organs visible. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
HER2 (light blue)  locked in the inactive conformation by Trastuzumab (left) and Pertuzumab. Trastuzumab has drastically improved the prognosis of HER2-positive breast cancer patients.
3d plant Cell structure
Host cells with spores (mold) are inside wood under the microscope for education.
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
Arabidopsis thaliana pollen grains in anther, fluorescent staining of DNA by Hoechst 33342 and modelling by  surface rendering software.
Liver Fluke Section under light microscope with white background
Spread of corona viruses at school through aerosols. 3d illustration.
Computer generated abstract concept image of 3d spheres like metaphor of abstract business processes.
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