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Cyclin is a family of proteins that controls the progression of a cell through the cell cycle by activating cyclin-dependent kinase (CDK) enzymes or group of enzymes required for synthesis of cell cycle. 3D cartoon model, PDB 2i53, white background.
Chromosome structure with telomeres at the ends.
Proteasomes are a large molecular machine that degrade unneeded or damaged proteins that have been tagged with polyubiquitin.
Abstract Lactobacillus Bulgaricus Bacteria - 3d rendered microbiology image. Medical research, health-care concept. SEM (TEM)scanning view
Aromatase (estrogen synthase) enzyme. Protein responsible for the key step in the synthesis of estrogens. 3D illustration.
Molecular Model of Vitamin A,\n.\n_______________________________________________\nFind other Molecules in my Lightbox [url=http://www.istockphoto.com/search/lightbox/7500191][i] 'World of Molecules'[/i][/url]\n[url=http://www.istockphoto.com/search/lightbox/7500191][img]http://www.istockphoto.com/file_thumbview_approve.php?size=2&id=25027326[/img][/url]  [url=http://www.istockphoto.com/search/lightbox/7500191][img]http://www.istockphoto.com/file_thumbview_approve.php?size=2&id=15306802[/img][/url] \nFind other Molecules in my Lightbox [url=http://www.istockphoto.com/search/lightbox/13145593][i] 'Drug and Cure'[/i][/url]\n[url=http://www.istockphoto.com/search/lightbox/13145593][img]http://www.istockphoto.com/file_thumbview_approve.php?size=2&id=25100409[/img][/url]  [url=http://www.istockphoto.com/search/lightbox/13145593][img]http://www.istockphoto.com/file_thumbview_approve.php?size=2&id=25150570[/img][/url] \nFind other Molecules in my Lightbox [url=http://www.istockphoto.com/search/lightbox/13539420][i] 'Science & Medicine'[/i][/url]\n[url=http://www.istockphoto.com/search/lightbox/13539420][img]http://www.istockphoto.com/file_thumbview_approve.php?size=2&id=25149885[/img][/url]  [url=http://www.istockphoto.com/search/lightbox/13539420][img]http://www.istockphoto.com/file_thumbview_approve.php?size=2&id=22817974[/img][/url]
3d render Probiotic bacteria types set in circle shape. Good microbiota with healthy prebiotic bacillus. Lactobacillus, streptococcus, bifidobacteria and other microorganisms. Volume simple elements.
Bacteria under the microscope.
3D cartoon and Gaussian surface models, PDB 2zva, white background
Lactose-negative biofilm-forming Enterobacter cloacae, resistant to multiple drugs.  Enterobacter cloacae is a member of the normal gut flora. These bacteria are responsable for many hospital-acquired infections for which the mortality rate is generally high.
3D model of a protein molecule. Endothelial tyrosine kinase receptor, a marker of angiogenesis.
Abstract Lactobacillus Bulgaricus Bacteria - 3d rendered microbiology image. Medical research, health-care concept. SEM (TEM)scanning view
Calreticulin, a protein which binds to misfolded proteins and prevents them from being exported from the endoplasmic reticulum to the Golgi apparatus. 3d rendering.
In vitro bacterial culture
TRPV1 is an ion channel that senses heat, regulates the body temperature and contributes to pain sensation. Source: PDB entry 5is0.
RNA molecule,Epigenetics concept.
3D cartoon model, secondary structure color scheme, PDB 5lb8, white background
Abstract Genetics Disease - 3d rendered image.
Anthrax is a fatal bacterial disease caused by the Bacillus anthracis bacterium, 3d rendering
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.
Epidermis. Electron microscope micrograph showing a keratinocyte of spinous layer. The epithelial cell has a polygonal shape, central nucleus with nucleolus, cytoplasm full of keratin filament bundles, and numerous dark desmosomes crossing the intercellular spaces.
Photomicrograph of one celled amoeba. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
orange: RNA primer; red: RNA template; light blue: proofreading riboexonuclease; mid blue: helicase; dark blue: RNA directed RNA polymerase; violet: non structural proteins (NSPs).
abs Bacteria concept - 3d rendered microbiology image. Medical research, health-care concept.
3D cartoon model, secondary structure color scheme, PDB 2gte, white background
Petri dish at lab
Leptin, the human obesity protein that regulates an appetite. 3D molecular structure
3d macro render of bacteria under the microscope
Enterobacteriaceae, gram-negative rod-shaped bacteria, part of intestinal microbiome and causative agents of different infections, 3D rendering. Escherichia coli, Klebsiella, Enterobacter and other
Probiotic Lactobacillis Bacteria
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