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From left to right: the NMDA and  AMPA receptors transport calcium cations into neurons after being activated by the neurotransmitter glutamate and  the GABA receptor (right) transport chloride anions after the activation by gamma aminobutyrate. PDB entries: 6wht,  3kg2, 6d6u
Dengue virus cells. 3D Render
plant cells under a microscope, stem section
Human embryonic stem cells
Host cells with spores (mold) are inside wood under the microscope for education.
Dna structure digital concept
Stem of Nerium indicum T.S. under light mircoscope with white background
3D render of an abstract medical background with abstract virus cells
Bacterial multidrug efflux pumps (E-CmeB) expel antibiotics  from inside the bacterium (bottom): ciprofloxacin (yellow), chloramphenicol (violet),  ampicillin (red).
Molecular Structure. Science background. 3D Render
Coxsackie virus internal structure, 3d illustration set isolated on white
Housing construction in Hong Kong
Stem of cotton cross section. Light microscope slide with microsection of plants of the genus Gossypium in the mallow family Malvaceae. Plant anatomy. Biology. Photo.
3D rendering of microscopic molecular structure
Hyaline cartilage, Elastic cartilage and Bone Human under the microscope in Lab.
3d rendering of transparent molecule shape on green color background.
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).
Candida Auris Cells.  3D Render
Candida auris fungi, emerging multiple drug resistant fungus - 3D illustration
Human embryonic stem cells
Haematococcus pluvialis green and cyst algae under microscopic view, empty space - haematocyst, active and resting cells, strong antioxidant astaxanthin
Molecular model of amylose, one of the two sugar components in starch
Backgrounds of Bacteria and Mold under the microscope in Lab.
H2 Hydrogen Molecule Fuel Cell Element Vehicle Biodegradable Ethical Renewable Energy
Repairs ongoing to a church in Loboc, Bohol, the Philippines
Dengue virus cells. 3D Render
Escherichia coli bacterium, E.coli, gram-negative rod-shaped bacteria, normal flora in GI tract and causative agent of diarrhea, close view.
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.
Algaes under microscopic view
3d Rendering Molecular Structure,Ozone,Hydrogen and oxygen
Free Images: "bestof:Cell Scaffolding (12753438075).jpg Top The same basic cell type grown on two different bio scaffolds collagen gel and a grid-like scaffold made of a"
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Euryglossidia,_f,_australia,_face_2014-10-11-17.16.19_ZS_PMax.jpg
Euryglossidia,_f,_australia,_side_2014-10-11-17.23.14_ZS_PMax.jpg
dasypoda,f,_united_kingdom,_face_2014-10-11-20.28.43_ZS_PMax.jpg
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dasypoda,f,_united_kingdom,_back_2014-10-11-20.21.29_ZS_PMax.jpg
WHAT_YOUR_KIDS_ARE_BEING_TAUGHT.jpg
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portugues-sexo_alemão-sex_ingles-sex_africano-seks_russo-секс_albanes-sex_chines-性別_bulgaro-секс_croata-spol_gales-rhyw_coreano-섹스_frances-sexe_japones-セックス_filandes-sukupuolesta_arabe-الجنس_prontos_ai_tens_em_15_linguas_a_p.jpg
portugues-sexo_alemão-sex_ingles-sex_africano-seks_russo-секс_albanes-sex_chines-性別_bulgaro-секс_croata-spol_gales-rhyw_coreano-섹스_frances-sexe_japones-セックス_filandes-sukupuolesta_arabe-الجنس_prontos_ai_tens_em_15_linguas_a_p.jpg
Design_Analysis_of_the_B-24J_Liberator.png
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Design_Analysis_of_the_F6F-5_Hellcat.png
Prokaryote cell diagram sr.svg
Prokaryote cell diagram de.svg
Cell junction simplified en.svg
Innate_Immune_cells.svg
Prokaryote cell-ro.svg
Prokaryote cell diagram de-2.svg
Average prokaryote cell- nl.svg
Innate_Immune_cells_-_ru.svg
Zelula prokarioto tipikoa.svg
Engineered monoclonal antibodies.svg
Mesosome formation.svg
Flagellum base diagram en.svg
Flagellum base diagram-fr.svg
Notable mutations.svg
Acrosome reaction diagram de.svg
Average prokaryote cell- ru.svg
Average prokaryote cell- uk.svg
Tetralogy of Fallot.svg
Design_Analysis_of_the_Boeing_B-17G_Flying_Fortress.png
1905_04_15_Page_2a.jpg
Biholomorphism illustration.svg
Window function and frequency response - Rectangular.svg
Window function – Rectangular.svg
Work function mismatch gold aluminum.svg
Fourier transform – Rectangular.svg
Kennfeld Wasserturbinen.svg
YES_HE_DID_..AND_THIS_IS_WHY.jpg
Cell Scaffolding (12753438075).jpg
Innate_Immune_cells.jpg
Japonsche_rock_van_zijde_met_grijsblauw_fond_waarop_rijstbundels_en_bloemtakken_in_rood_met_groen_en_rood_met_blauw,_gevuld_met_zijden_watten_en_gevoerd_met_gele_zijde-Rijksmuseum_BK-BR-725-A.jpeg
M2-F1_lifting_body_and_Paresev_1B_on_ramp_DVIDS735192.jpg
Histology tissue culture.jpg
Armbanduhr Rueckseite.jpg
Photo-lithium-cell-CR2016.jpg
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Fibers of Collagen Type I - TEM .jpg
Fibers of Collagen Type I - TEM.jpg
Lipid Molecules (5941036454).jpg
Cancer cells- death (step 3).jpg
Cancer cells- death (step 4).jpg
Average prokaryote cell ro.jpg
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Cancer cells- death (step 1).jpg
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CR2032 disassembled.jpg
Cancer cells- death (step 2).jpg
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Bone Cells (5828753702).jpg
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Lead-acid battery grid and filler.png
Malignant lymphoma, high grade B cell 1.jpg
Proteins.jpg
DNA gel- southern blotting.jpg
MSX palette sample image.png
Multidrug-resistant Klebsiella pneumoniaeand neutrophil.bmp.jpg
Botticelli,_sant'agostino_degli_uffizi.jpg
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KG1-e-CoMed vector system.jpg
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Mature cystic teratoma of ovary 2.jpg
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The_Quarterly_journal_of_the_Geological_Society_of_London_(14072661561).jpg
Demm 2000 Mandelbrot set.jpg
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