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Spike glycoprotein homotrimer, a main target for neutralization antibody, to bind its receptor, ACE2, and mediate membrane fusion and virus entry. 3D cartoon and Gaussian surface models, white background.

$The three-dimensional structure of proteins is represented in a variety of conformations. This image is based on the ribbon structure of a protein. It is suitable for biology notebooks and book covers.\nThis image has not been created by AI.$

Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet), ampicillin (red).

RNA And DNA concept as a deoxyribonucleic acid or a ribonucleic acid as biological molecules as a symbol of the evolution of life and genetic sequencing.

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.

DNA or Deoxyribonucleic acid is a double helix chains structure formed by base pairs attached to a sugar phosphate backbone.

Molecular Model of Human Insulin with disulfide bonds shown.

3D cartoon and Gaussian surface models, chain id color scheme, PDB 7t3a, white background

plant Leaf of Nerium indicum T.S. under light mircoscope with white background

The crystal structure of the tumor marker protein. The 3D model of the biological macromolecule.

The calcitonin gene related peptide (yellow) binds to its receptor (blue) on neurons and smooth muscle cells of cerebral blood vessels, activating a signal cascade through G-proteins (dark blue) in this cells that leads to a dilatation of the blood vessels (vasodilatation).

3D rendering of microscopic particles and bubbles

Futuristic artificial DNA strand among organic models. Medical innovation and technology concept.

Proliferating cell nuclear antigen (PCNA) is a DNA clamp that acts as a processivity factor for DNA polymerase δ in eukaryotic cells and is essential for replication. PCNA is a homotrimer and achieves its processivity by encircling the DNA, where it acts as a scaffold to recruit proteins involved in DNA replication, DNA repair, chromatin remodeling and epigenetics. 3D cartoon and Gaussian surface models, chain instance color scheme, based on PDB 3wgw, white background.

$What micro plastic is made of - Chemical ingredients.\nClose up of microplastic on finger concept of water pollution and global warming$

3D rendering illustration of some soccer cones

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.

Chain or ribbon diatom, a type of algae.

A fixed preparation of yeast and hyphae stained with gentian violet that buds under a microscope with immersion

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 7las, chain id color scheme, white background

Liver Fluke Section under light microscope with white background

DNA molecules, structure of the genetic code, 3d rendering,conceptual image.

3d render of abstract connection background

$The angiotensin converting enzyme 2 (ACE2, blue) in complex with the amino acid transporter BOAT 1 (violet). ACE2 is involved in control of blood pressure and is the target for the SARS-CoV-2 virus to infect human cells..\$

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Biological classification L Pengo tweaked.svg

Standard Model of Elementary Particles.svg

'Le voeu du faisan' Rijksmuseum SK-A-4212.jpeg

Hendrick_ter_Brugghen_-_Bagpipe_Player_-_Google_Art_Project.jpg

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Diphosphomevalonate dicarboxylase 3D4J.png