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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.
Close-up shot of a petri dish for checking an antibiotic in the laboratory.
Scoop of whey or soy protein powder, white capsules of amino acids, vitamins, creatine, bodybuilding food supplements and sports nutrition. fruits, banana, pear and grape on a dark wooden board.
Chemotherapy drugs in oral and injection forms.  Please visit my lightbox for more similar photos
Bacteria pathogen - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view
Molecular model of insulin hormone, 3D illustration. It is produced by pancreas and takes part in glucose and lipid metabolism
Nanomedicine inside of closed single layer carbon nanotube with conjugated antibodies 3d rendering
Hemp Floral Wax in a petri dish
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Vitamin D Capsule with D3 Element. Dietary Supplements. 3D Render
3D cartoon and Gaussian surface models, PDB 6gu2, white background
molecular symbol painted on the wall
Green algae cells background
Turmeric Capsules
Intracellular transport, kinesin motor proteins, orange, transport molecules moving across microtubules, 3D illustration
Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria
Vitamin D Benefits. Close up.
Streptococcus pneumoniae causes acute bacterial infections. Streptococcus pneumonia can be\ndifferentiated from other alpha-hemolytic streptococci\nbased on its susceptibility to optochin ( the disk is visible on the pic).
Tryptophan or Trp is an alpha-amino acid that is used in the biosynthesis of proteins, 3d illustration
A molecular model of Bisphenol A or BPA.  It is a common building block in the production of many epoxy resins and plastics including polycarbonate plastic. As such it is present in a huge range of food packaging and household products. There are now concerns about its health effects, particularly its effect on children, infants and fetuses.   Isolated on white.
Antibiotic susceptibility testing,  antibiotic resistance.
Chain or ribbon diatom, a type of algae.
Lobomycosis, a chronic skin disease caused by microscopic fungi Lacazia loboi and characterized by nodular and keloidal lesions primarily affecting the limbs and ears, 3D illustration
An ECG test chart with pills and a stethoscope
Microcrystalline wax with chemical formula on white laboratory table.
Medicine At Home
Ubiquitin is a small regulatory protein found in most tissues of eukaryotic organisms, i.e., it is found ubiquitously. 3D cartoon and Gaussian surface model with the differently colored secondary structure elements, white background.
Scientist's hand Collecting data for research.
Algae, a unicellular organism
Vitamin D3 Capsules. 3D Render
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Alberto Larraguibel y su caballo Huaso batiendo el récord mundial de salto alto.png
Digestive system diagram en.svg
Azzurro e Bianco a strisce con bordo nero.svg
Tangerine con lati Bianchi rifiniti di Nero.svg
Tangerine con lati Bianchi rifiniti di Nero (onde).svg
Quadripartito con Rosso Bianco e Nero e quadrante a Strisce.svg
Adherens Junctions structural proteins-LangNeutral.svg
European Union Russia Locator (Crimea disputed).svg
Drometrizole 200.svg
Drometrizole 100.svg
Russia USA Locator (Crimea disputed).svg
Flag of Kawasaki, Miyagi.svg
Chapter of Kawasaki, Miyagi.svg
New Horizons trajectory.svg
Parecoxib 200.svg
6,6'-methylenebis(2-(tert-butyl)-4-methylphenol) 100.svg
EugenolOzonolysis.svg
Map of global minimum wages per hour in USD.svg
Fort Sumter Flag.svg
Oil on canvas portrait of Madame du Barry started in 1789 by Vigée-Lebrun (Private collection).jpg
Claude Monet - Springtime - Walters 3711.jpg
Thomas_Whitcombe_-_H.M.S._'Pique',_40_guns,_Captain_C.H.B._Ross_capturing_the_Spanish_Brig_'Orquijo',_18_guns,_8th._February_1805.jpg
Italian_-_St_Christopher_and_the_Christ_Child_-_Walters_37590.jpg
Arvin,_Kern_County,_California._One_of_a_community_of_shacks_in_the_subdivided_orchard_rented_to_agr_._._._-_NARA_-_521659.jpg
Simplified Languages of Europe map-fr.svg
Théodore_Géricault_-_Riderless_Racers_at_Rome_-_Walters_37189.jpg
Map-Namibia.svg
Riviergezicht bij maanlicht Rijksmuseum SK-A-3245.jpeg.jpg
Paul_Gauguin_-_Breton_Girls_Dancing,_Pont-Aven_-_Google_Art_Project.jpg
Pittsburgh newspaper consolidation timeline.svg
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