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3D cartoon and Gaussian surface models, chain id color scheme, PDB 2y73, white background
Molecular model of tyrosine, one of 20 required amino acid to form proteins.
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Particles, medical concept
Baryte or barite is a mineral consisting of barium sulfate. The baryte group consists of baryte, celestine, anglesite and anhydrite. 3d illustration
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Copper(II) sulfate with molecular structure. Chemical ingredient used in medical and public health issues.
Horizontal still life close up of green jade and pink rose quarts crystal facial beauty rollers and combs on crystal rock
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.
Colorful seamless pattern with Crystal stones.
After dopamine binding, the dopamine receptor changes his shape and binds the inactive G protein.The G protein expels its GDP molecule replacing it by GTP. and falls into two pieces. The Galpha subunit binds to and activates the enzyme adenylyl cyclase, which produces then cyclic AMP spreading a signal through the cell.
Close up of cristal beads
Ambroxol molecule structure. Three dimensional model render
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Molecular model of insulin hormone, 3D illustration. It is produced by pancreas and takes part in glucose and lipid metabolism
Chemical formula of Progesterone
3D cartoon and Gaussian surface models, PDB 3n8v, chain id color scheme, white background
plant Soya Stem C.S. under light mircoscope with white background
Classical pathway, complement activation: antigen(magenta)-bound immunoglobulin M (IgM, light blue) activates the C1 complex (violet). Source: PDB entries 7k0c, 1cgd, 5hkj, 6f1c.
A molecular model of the flavonoid Quercetin.  An antioxidant and anti-inflamatory, it is used as a nutritional suplement.  It is commonly found in many fruits and vegetables and is a significant chemical component of tea.  Isolated on white.
3D rendering of Cosmetics essentials combined with a magic serum. Serum through the skin and reduce saggy skin of the skin cell. Moisturizer for lightening Dark skin tone changed to bright.
Inside protein molecule
Calcium carbonate chip in chemical watch glass with molecular structure on white laboratory table. Top view
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
3D cartoon and Gaussian surface models, PDB 3hg3, white background
Surface photography of nature pattern Crystal shot for background.
Cross sections of the plant root under the microscope view for education
Quantum Gravity 3d rendered image of a comprehensive exploration of Quantum Gravity theories. String theory, loop quantum gravity (LOG), causal dynamical triangulation, twistor theory, gravitational waves, spacetime, gravity waves, quantum mechanics, quantum entanglement concepts.
Doctor or scientist hand with a laboratory flask containing colored jellybeans
Computer generated abstract concept image of 3d spheres like metaphor of abstract business processes.
Free Images: "bestof:Peroxisome.svg en Basic structure of a peroxisome showing the crystalized enzyme core as found in rat liver cells Own work by uploader based on the arrangement"
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