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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
Patient lying on the examination table receiving his dose of collagen and vitamins in injection applied directly to the face
Human hand with onychomycosis and close-up view of Trichopyton mentagrophytes fungi, one of the causative agents of nail infections, 3D illustration
H2 Hydrogen Molecule Fuel Cell Element Vehicle Biodegradable Ethical Renewable Energy
The epidermis is the most superficial layer of the skin and provides the first barrier of protection from the invasion of substances into the body
Digital background depicting innovative technologies in medicine systems, neural interfaces and research genetic and biology
3D rendering of microscopic molecular structure
Microorganisms such as bacteria, viruses and fungi on skin surface
Dummy Arm for Practicing Injection Techniques
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).
Copper(II) sulfate with molecular structure. Chemical ingredient used in medical and public health issues.
plant Zea Stem C.S. under light mircoscope with white background
Green algae cells background
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.
3D cartoon model with the interacting residues labeled, PDB 2aot, black background.
Urothelial carcinoma, high grade. High-grade tumors have an aggressive appearance under a microscope and are assumed invasive in the kidney or ureter.
Fire cupping cups on patient shoulder in Acupuncture therapy
The glucagon like peptide-1 receptor (GLPr) is a G proteincoupled receptor (GPCR) that mediates the action of GLP-1, a peptide hormone. The activated receptor has a strong effect on the management of type 2 diabetes mellitus and obesity, including glucose homeostasis and regulation of gastric motility and food intake.
Antibiotic resistance testing. Selective focus show the inhibition zone of Ofloxacin (OXF) antibiotic on microbial colony.
Squash preparation of onion root tip cells stained to reveal chromosomes, Bright field illumination, light microscopy. This image was taken with the X40 objective lens. Depth of focus is extremely low at this magnification. Smaller apertures give greater depth of focus, but image quality deteriorates and resolution is greatly reduced. The aperture in this image was optimised for contrast and resolution. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.
Nucleosome structure. Structure of an oligonucleosome, showing the packaging of DNA in chromosomes. 3D illustration.
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.
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Molecular model of amylose, one of the two sugar components in starch
Ribosome, 3d illustration of Translation
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
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.
Catheter is not currently connected to any medication
Binary fission in bacteria. 3D illustration.
Double zones can be seen around 3 antibiotic disks. This is a clear sign of more than one bacterium being present. To measure antibiotic susceptibility for each bacterium it will be necessary to isolate E. coli and Klebsiella on separate agar plates.
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