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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.
plant Zea Stem C.S. under light mircoscope with white background
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.
3d animal cell on black background
Artificial Intelligence: Simplified image of the principles of convolutional neural networks with input, hidden, output layers. It classifies geometric forms - in this case a cube
Photomicrograph of flatworm,
Auto Pilot autonomous car self-driving vehicle car driverless object detection sensor digital speedometer   UGV Advanced driver assistant system  3d illustration
Digital Dispersed corona virus on petri dish. Animation of multiplication of CORONA VIRUS COVID-19
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.
Burkitt lymphoma is a form of non-Hodgkin's lymphoma in which cancer starts in immune cells called B-cells. Recognized as a fast growing human tumor, Burkitt lymphoma is associated with impaired immunity and is rapidly fatal if left untreated.
Deep artificial neural network, schematic structure with layers text labels on white background
Progress concept: Navigational destination marker on 3D highway design illustration. Business journey way on white background with copy space and clipping path for easy edit. Road infographics.
Close up 3D illustration of microscopic Cholera bacteria infection
Liver Fluke Section under light microscope with white background
Cell Membrane and Molecules, 3d rendering. Computer digital drawing.
Viral Infection Monkeypox Virus - 3d rendered image. Abstract biomedical illustration. \nAntibody, Antigen, Vaccine technology concept.
Amitriptyline is used as an antidepressant and antimigraine drug. It blocks sodium channels on neuronal membrans. Sodium channels generate and propagate action potentials in neurons and muscle. Source: PDB entry 6AGF
Urothelial carcinoma, high grade.  High-grade tumors have an aggressive appearance under a microscope and are assumed invasive in the kidney or ureter.
brown fat cell also called brown adipose tissue side to side with white fat cell 3d rendering
Photomicrograph of two rotifers. Rapidly rotating cilia at top of heads, internal organs visible. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.
Light bar with LED bulbs  Lighting equipment on white background
Molecular model of amylose, one of the two sugar components in starch
3D Gaussian surface and cartoon models, chain id color scheme, PDB 2axt, putative membrane is shown, white background
Flow Chart Diagram.
centropyxis aculeata (amoeboid organism) under the microscope - optical microscope x400 magnification
Cryptococcal pneumonia. Cryptococcal pneumonia is a fungal infection caused by Cryptococcus neoformans predominantly in immunosuppressed individuals and rarely in the immunocompetent population.
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). Blocking the CGRP receptor diminishes the quantity of migraine attacks.\
Bubbles background
Cell Membrane and Molecules, 3d rendering. Computer digital drawing.
3D Blue Eyeball Flying (Depth Of field)
Free Images: "bestof:Desmosome cell junction en.svg Image moved from File Desmosome cell junction svg A desmosome also known as macula adherens Latin adhering spot is a cell"
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