Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Evolution of nanotechnology and self-proliferation of therapeutic agents
Vitamin B12, also known as cobalamin, is a water-soluble vitamin involved in metabolism. It is one of eight B vitamins. It is required by animals, which use it as a cofactor in DNA synthesis, and in both fatty acid and amino acid metabolism. It is important in the normal functioning of the nervous system via its role in the synthesis of myelin, and in the circulatory system in the maturation of red blood cells in the bone marrow. Plants do not need cobalamin and carry out the reactions with enzymes that are not dependent on it.
3D rendering of a biotinylated antibody linked to BODIPY molecules or bright green. This technique allows to visualize and track the antibody for targeted applications in medical research.
A model of the phospholipid bilayer structure that makes up living cells and their contents. Its raw, beautiful appearance evokes images of biology and biochemistry. It can be used in magazines and textbooks and on the covers of presentations.\nThis image was not created by AI.
Propagation of the virus in the human body. How coronavirus attacks cells. If the virus finds a compatible receptor allow covid-19 to replicate itself. Section of the cell and SARS-CoV-2. 3d render
Embryonic stem cells under microscope.
Bacteria Streptococcus thermophilus,Group A Streptococcus,Erythrogenic toxin
Adenovirus enter cells throughs membrane
Lenvatinib is an anti-cancer medication for the treatment of certain kinds of thyroid cancer and for other cancers as well.
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.
Biochemistry molecule formula written on white paper
Phospholipid bilayer membrane structures that make up living cells and their contents. This is an image of membrane proteins in the membrane.\nThis image, which looks like a plastic model, evokes biology and biochemistry. It can be used as a cover for magazines, textbooks and presentation materials.\nThis image was not created by AI.
Nicotinamide adenine dinucleotide or NAD is a coenzyme found in all living cells. It is a dinucleotide, because it consists of two nucleotides joined through their phosphate groups. 3d illustration
3D rendering of microscopic molecular structure
Lung cancer, also known as lung carcinoma, is a malignant lung tumor characterized by uncontrolled cell growth in tissues of the lung.
Analyzing cell division and the human genome to create new drugs and treatments for diseases.
Real fluorescence microscopic view of human dendritic cells
Cell Membrane Phospholipid Structure,Phospholipid bilayer of the cell membrane,Lipid bilayer
3D cartoon and Gaussian surface models, PDB 6rb9, chain id color scheme, putative membrane shown, white background
Hormone Oxytocin biochemical concept background
Cytochrome P450 molecule. CYP 3A4 is the most promiscuous of the human CYP enzymes. Molecular model. 3D rendering. Illustration
Chemical formula of the vitamin B
Vitamin C (also known as ascorbic acid and ascorbate) is a water-soluble vitamin found in citrus and other fruits and vegetables, also sold as a dietary supplement and as a topical \
Evolution of nanotechnology and self-proliferation of therapeutic agents
Antibiotic resistance testing. Selective focus show the inhibition zone of Ciprofloxacin (CIP) antibiotic on microbial colony.
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.
Vacuolar-type ATPase (V-ATPase) is a highly conserved evolutionarily ancient enzyme with remarkably diverse functions in eukaryotic organisms. V-ATPases acidify a wide array of intracellular organelles and pump protons across the plasma membranes of numerous cell types. 3D cartoon and Gaussian surface models, based on PDB 6wm2, white background.
Liquid-liquid phase separation (LLPS), which is the separation between liquids present in the cell. Organelle without membrane.Droplets usually have an important function, but can also cause disease if they lose their function.\nThis image was not created by AI.
After binding to the LDL receptor (blue), low density lipoprotein particles deliver cholesterylesters (yellow) to lysosomes, where they are processed by the enzymes NPC2, and NPC1 and then transported to the endoplasmatic reticulum for further processing.
In vitro bacterial culture
Free Images: "bestof:Lymphocyte activation.svg Lymphocyte activation cite book Rang H P Pharmacology Churchill Livingstone Edinburgh 2003 0-443-07145-4 Page 223 2008-01-26 Made in"
Walt_Whitman_edit_2.jpg
Meisje_met_de_parel.jpg
Stroop Report - Warsaw Ghetto Uprising 06b.jpg
Lymphocyte activation.svg
Noradrenaline breakdown.svg
Degradace noradrenalinu.svg
Lymphocyte activation simple.svg
T_cell_activation.svg
T_cell_activation_-_ru.svg
Giulio_Romano_(school_of_Raphael)_-_Portrait_of_Doña_Isabel_de_Requesens_-_Louvre_612_Joconde_000PE026978.jpg
Paul_Gauguin,_ca.1891-1893,_Tehura_(Teha'amana),_polychromed_pua_wood,_H._22.2_cm._Realized_during_Gauguin's_first_voyage_to_Tahiti._Musée_d'Orsay,_Paris.jpg
Pittsburgh newspaper consolidation timeline.svg
A 276575 structure.svg
Ranji_1897_page_085_Briggs_bowling.jpg
Myofilament.svg
Ranji_1897_page_090_Mold_delivering_the_ball.jpg
Ranji_1897_page_189_F._S._Jackson_making_an_on-drive.jpg
Calcium regulation.svg
Calcium regulation pl.svg
Container-ship-rates.svg
Thin filament formation.svg
Paracetamol metabolism.svg
Renin-angiotensin system in man shadow.svg
Tuberculosis-prevalence-WHO-2009.svg
Renin-angiotensin system in man shadow (zh-cn).svg
Michał Serwacy Wiśniowiecki.JPG
James_Madison_by_Gilbert_Stuart.jpg
Sumatran Rhino range.svg
M-13Conn.svg
Sumatran Rhino range.ar.svg
M-Blank.svg
Charles_Georges_Spitz_-_Tahitian_woman.jpg
Mughal Genealogical Table.svg
M-Blank3.svg
M-TempBus.svg
M-TempConn.svg
M-Template.svg
M-Template3.svg
Assertion_of_Liberty_of_Conscience_by_the_Independents_of_the_Westminster_Assembly_of_Divines,_1644.jpg
Vincent_van_Gogh_-_Wheatfield_Under_Thunderclouds_-_VGM_F778.jpg
Vincent_van_Gogh_-_Almond_Blossom_-_VGM_F671.jpg
Vincent_van_Gogh_-_Head_of_a_Skeleton_with_a_Burning_Cigarette_-_VGM_F212.jpg
Pietro_da_Cortona_Saint_Martina_Refuses_to_Adore_the_Idols.jpg
Wound healing phases.svg
Sample 09-F9 protest art, Free Speech Flag by John Marcotte.svg
US incarceration timeline-clean.svg
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
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
Lymphocyte activation-es.png
Lymphocyte activation.png
T cell activation.png
T_cell_activation-tr.png
Lymphocyte activation simple-es.png
Plucking_the_Red_and_White_Roses_in_the_Old_Temple_Gardens_(1908)_by_Henry_Arthur_Payne.jpg
Lymphocyte activation simple.png
Lymphocyte activation simple-ca.png
Activacion_LT.png
Shock-cell2.PNG
PattenJohn.jpg
AhRSignaling colour.png
B_cell_activation.png
JohnsKenseyJr.jpg
T cell activation-es.png
NMDA receptor activation and antagonists.PNG
E2F family member.png
Ranji_1897_page_215_Shrewsbury_playing_back.jpg
Edward_Cooke_(translator),_Magna_Charta_(1680,_title_page).jpg
FMIB_34896_Oyster_Shells_Showing_Pits_and_Chambers_Made_by_Boring_Clam.jpeg
FMIB_47120_Chirus_hexagrammus,_from_Japan.jpeg
Jaffna Kingdom.jpg
Calcium regulation.png
Hobbit runes.png
Ranji_1897_page_095_Peel_in_the_act_of_delivery.jpg
Andrew_Horn,_The_Mirrour_of_Justices_(1st_ed,_1646,_title_page).jpg
FMIB_38367_Cychla_monoculus.jpeg
FMIB_38368_Trygon_garrapa.jpeg
FMIB_38369_Corvina_grunniens.jpeg
FMIB_38591_Phractocephalus,_Agas.jpeg
FMIB_38592_Erythrinus_macrodon.jpeg
FMIB_38593_Sudis_gigas.jpeg
FMIB_38601_Serrasalmo_emarginatus.jpeg
FMIB_38603_Prochilodus_binotatus.jpeg
FMIB_38607_Hypothalmus_davalla.jpeg
FMIB_38608_Chalceus_macrolepidotus.jpeg
FMIB_38609_Schizodon_fasciatus.jpeg
FMIB_38613_Arius_oncinus.jpeg
FMIB_38614_Serrasalmo_piranha.jpeg
FMIB_38615_Prochilodus_Rubro-Leniatus.jpeg
FMIB_38616_Pimelodus_insignis.jpeg
FMIB_38617_Xiphostoma_ocellatum.jpeg
FMIB_38618_Serrasalmo_niger.jpeg
FMIB_38620_Anodus_notatus.jpeg
FMIB_38621_Platystoma_tigrinum.jpeg
FMIB_38624_Osteoglossum_arowana.jpeg
FMIB_38625_Prochilodus_insignis.jpeg
FMIB_38626_Hypostoma_squalinum.jpeg
FMIB_38628_Hydrocyon_armatus.jpeg
FMIB_38629_Cychla_orinoceneis.jpeg
FMIB_38630_Centrarchus_niger.jpeg
Terms of Use   Search of the Day