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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.

Liver Fluke Section under light microscope with white background

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

Neuroendocrine carcinoma well differentiated (carcinoid) rectum with immunostain synaptophysin

Backgrounds of Bacteria and Mold under the microscope in Lab.

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.

PAPS Smear study of a young women under microscopy showing Atrophic changes in uterus which is unusual at young age.

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

Hypertension disease renal different area under microscopy, this is art treated normal light microscopy image,for original image check my other files

3D cartoon and Gaussian surface models, PDB 1j7n, chain id color scheme, white background

Squamous cell carcinoma of the lung is a type of lung cancer. It occurs when abnormal lung cells multiply out of control and form a tumor.

Squalane is a hydrocarbon derived by hydrogenation of squalene. 3d illustration

Histological Cerebellum human, Sympathetic ganglion human And Spinal cord human under the microscope for education.

Conceptual large group of Covid-19 viruses with copy space. Covid-19 virus illustration downloaded from CDC than layered and manipulated. for more information please visit Centers for Disease Control and Prevention web site: https://www.cdc.gov/media/subtopic/images.htm

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.

Photomicrograph of rotifer. Rapidly rotating cilia at top of head, internal organs visible. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.

3D cartoon and Gaussian surface models, chain id color scheme, PDB 2y73, white background

Rosai–Dorfman disease (RDD) is a rare proliferative histiocytic disorder of unknown etiology. RDD typically presents with generalized lymphadenopathy and polymorphic histiocytic infiltration of the lymph node sinuses; however, occurrences of extranodal soft tissue RDD may rarely occur when masquerading as a soft tissue sarcoma.

Leaf of Nerium indicum T.S. under light microscopy

silver foil adhesive tape isolated on white background

$Model of DNA Base Pair adenine (A) and thymine (T)\n\nFind more molecules in the Lightbox [url=http://www.istockphoto.com/search/lightbox/7500191][i] 'World of Molecules'[/i][/url], or contact me on customized design/rendering of any molecules in 3D (see some examples below). \n\n[img]http://www.drugmodel.com/360/superglassy900.jpg[/img] \n[img]http://www.drugmodel.com/360/capsule900.jpg[/img] \n[img]http://www.drugmodel.com/360/glassy900.jpg[/img] \n[img]http://www.drugmodel.com/360/heart900.jpg[/img] \n[img]http://www.drugmodel.com/360/viruskiller900.jpg[/img] \n[img]http://www.drugmodel.com/360/mesh900.jpg[/img] \n[img]http://www.drugmodel.com/360/cartoon900.jpg[/img] \n[img]http://www.drugmodel.com/360/photo900.jpg[/img] \n[img]http://www.drugmodel.com/360/ovoid900.jpg[/img] \n[img]http://www.drugmodel.com/360/swirlcone900.jpg[/img] \n[img]http://www.drugmodel.com/360/super900.jpg[/img] \n[img]http://www.drugmodel.com/360/glowing900.jpg[/img]$

$The Raf/MEK/ERK (MAPK) propagates growth signals in the cell. Misregulation can lead to cancer.\nThe red dots on the active EGFR are phosphorylated tyrosines. PDB entries: 1egf, 1nql, 1m17, 2jwa, 3njp, 2gs6, 1gri, 1xd2, 3ksy, 5p21, 6xi7, 6q0j, 2y4i,$

Symmetrical composite abstract pattern background.

3D cartoon and molecular surface models, chain id color scheme, putative membrane shown, pdb 1l7v, white background

Lymphocytic myocarditis. Myocarditis is an inflammation of the heart muscle. Lymphocytic refers to the type of cell seen in the affected tissue. A lymphocyte is a type of immune function cell.

Human lung pathology under light microscope, The lungs is organs of the respiratory system in humans.

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