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B-chain pentamer and A-chain subunit (green), 3D cartoon and Gaussian surface model, white background
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
A quadrant streak of the bacterium Staphylococcus aureus cultured or inoculated on Baird-Parker agar with egg tellurite .
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.
Immunotherapy of Alzheimer's disease: Monoclonal antibody (light blue) bound to an amyloid beta peptide (orange),  that is aggregated to amyloid beta fibrils, which build up amyloid plaques.
Chain or ribbon diatom, a type of algae.
Backgrounds of Bacteria and Mold under the microscope in Lab.
Close up of a Petri dish with blue specimens in it
A listeria monocytogenes growing on an agar plate isolated on a black background
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.
False color image of diatom under the microscope
Liver Fluke Section under light microscope with white background
3D cartoon and Gaussian surface models, PDB 6gu2, white background
Vitamin D3 Capsules. 3D Render
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.
Dryer lint collected in filter
Green algae cells background
milk green tea powder
Antimicrobial susceptibility testing in petri dish. Microbiologist check Antibiotic resistance of bacteria
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.
3D cartoon and molecular surface models, chain id color scheme, putative membrane shown, pdb 1l7v, white background
DNA A-T Pair
Aerial view of loyster farm by Ardara, County Donegal - Ireland.
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Green and red colors. Trichoderma and Sclerotinia in the laboratory in the special rounded containers.
green milk tea powder
Lily leaf c.s. under microscope
Overnight culture of lactose non-fermenting  E.coli STEC O157:H7 producing Shigatoxin. Shiga toxin-producing E.coli (STEC) strains can cause serious illness. Most patients were infected through contaminated food; however STEC can also spread among people and family outbreaks are not uncommon.
3D cartoon and Gaussian surface models, PDB 2vtb, white background.
Photomicrograph of rotifer. Rapidly rotating cilia at top of head, internal organs visible. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
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