Click Here for More Images from iStock- 15% off with coupon 15FREEIMAGES 
Photomicrograph of rotifer, probably Rotaria rotatoria. Rapidly rotating cilia at top of head, internal organs visible. Green circles are algae. Live specimen. Original image at 40X, wet mount, transmitted brightfield illumination. Indistinct image due to motion blur of live specimen and very shallow depth of field of brightfield illumination.
Freshwater aquatic zooplankton and algae under microscope view
Alternaria spore was zoom by transmission electron microscope. Alternaria is a genus of ascomycete fungi. Alternaria species are known as major plant pathogens.
Cheyletiella blakei Mite - Small Cat pest view under a microscope
Happy tardigrade- the water bear- a micro-animal living in moss that looks like it's smiling and dancing, from Shenipsit State Forest in Somers, Connecticut.
Squash preparation of  onion root tip cells stained to reveal chromosomes,  Bright field illumination, light microscopy.  This image was taken with the X40 objective lens.  Depth of focus is extremely low at this magnification.  Smaller apertures give greater depth of focus, but image quality deteriorates and resolution is greatly reduced.  The aperture in this image was optimised for contrast and resolution. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.
Microscopic image of urine granular cast and cellular cast, cause of exercise or dehydration Acute tubular necrosis. kidney diseases.
Trematode parasite under a microscope
Some amoebas like this one form shells. Shell is composed of bits of rock (sand), diatom shells, and other debris. Fresh water. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.
Amphora sp. algae under microscopic view pattern, Diatoms, phytoplankton, fossils, silica, golden yellow algae
Spore bags of helminthosporium contain 8 cells. This disease causes helminthosporiosis of wheat. Soon very small and quite harmful.
Honeybee Mouth Parts under light microscope with white background
\
In vitro bacterial culture
Ephestia elutella, wing of grain moth with scales macro close up under the light microscope, magnification of 40 times, microscope objective 4
Cheyletiella blakei Mite - Small Cat pest view under a microscope
Brown caddisfly trichoptera on white background
Diatoms, algae under microscopic view, phytoplankton, fossils, silica, golden yellow algae
Aspergillus fumigatus is one of the most common Aspergillus species to cause disease in individuals with an immunodeficiency. This pathogen primarily causes invasive infection in the lung.
close - up of a cat, isolated on white background
Photomicrograph of an ascus with eight ascospores. This preparation was stained with acid fuchsin, which stains the cytoplasm of the ascospores a deep red color. The fungus is an ascomycete, Diplodia corticola, that infects the wood of oak trees, and is one of the causes of oak decline disease.The picture was taken with a microscope equipped with differential interference contrast optical system that gives a three dimensional effect.
Lepocinclis acus or euglena acus, a single cell flagellate eukaryote under the microscope
Micro world
Paramecium caudatum is a genus of unicellular ciliated protozoan and Bacterium under the microscope.
Photomicrograph of colony of rotifers, Rotaria rotatoria, attached to dead plant matter. Rapidly rotating cilia at top of head, internal organs visible. Green circles are algae. Live specimen. Wet mount, 10X objective,  transmitted brightfield illumination.
Diatoms, algae under microscopic view, phytoplankton, fossils, silica, golden yellow algae
\
Demodex folliculorum - parasitic mite on the eyelashes of a human eye, microscope
Squash preparation of stained onion root tip cells showing various stages of mitosis. Differential interference contrast optics on a Leica microscope, Image taken with the X40 objective lens.  Depth of focus is extremely shallow (just a few microns).  Differential interference contrast results in an optical slice horizontally through the specimen providing maximum possible resolution at this magnification and good contrast. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.
Free Images: "bestof:Mesophleps oxycedrella1.jpg en Mesophleps oxycedrella http //www lepiforum de/lepiwiki pl Mesophleps_oxycedrella MILLIÈRE 1871 Mesophleps PD-old-100"
Helmuth_Karl_Bernhard_von_Moltke_Günther_BNF_Gallica.jpg
Westfaelischer_Friede_in_Muenster_(Gerard_Terborch_1648).jpg
Icy_est_le_vrai_pourtraict_naturel_de_la_ville,_cité,_université_de_Parisy,_Rossingol_execut.1576.jpg
Muzeum_Sułkowskich_-_Zabytkowy_Witraż.jpg
Whistlers_Mother_high_res.jpg
Kamianets-Podilskyi_map_1691.jpg
Southern Festoon in Vienna.jpg
Sunset 1 Kanagawa prefecture.jpg
Hôtel_Ville_Paris_burnt_Commune_1871.jpg
1897_Schischkin_Im_Park_anagoria.JPG
PrinceHenry.jpg
Cristo_crucificado.jpg
Sanzio_01.jpg
Beach_view,_by_Simon_de_Vlieger.jpg
Harmony_Gumery_Palais_Garnier.jpg
Dürer_-_Bildnis_der_Mutter.jpg
Venus_y_Adonis_(Veronese).jpg
paris-france-95585.jpg
Goya_Maja_naga2.jpg
Goya_Dog.jpg
Roshi_Ensei_lifting_a_heavy_beam.jpg
Cristo_en_la_cruz_(Goya).jpg
Winslow_Homer_-_Beach_scene.jpg
Le_chantier.jpg
Dante_Alighieri's_portrait_by_Sandro_Botticelli.jpg
Pieter_de_Hooch_-_The_Courtyard_of_a_House_in_Delft.jpg
Podkowiński-Szał_uniesień-MNK.jpg
Sunset_by_Caspar_David_Friedrich.jpg
Jacques-Louis_David,_Le_Serment_des_Horaces.jpg
Retrato_ecuestre_del_duque_de_Lerma_(Rubens).jpg
Jan_Verhas_-_La_revue_des_écoles_en_1878.jpg
Francisco_de_Goya_y_Lucientes_-_Gaspar_Melchor_de_Jovellanos.jpg
Mgr_Georges_Darboy_Photographie_ca1860_BNF_Gallica.jpg
La_fuite_des_nymphes.jpg
Manuel_Domínguez_Sánchez_-_Margarita_delante_del_espejo.jpg
De_Fourtou.jpg
A single white feather closeup.jpg
Paul_Gauguin_-_Self-Portrait_with_Halo_and_Snake.jpg
Francisco_de_Goya_y_Lucientes_016.jpg
Gilbert_Stuart_-_Catherine_Brass_Yates.jpg
Zelfportret_-_Hendrikus_van_de_Sande_Bakhuyzen.jpg
Plan_de_Paris_en_1657.JPG
Entierro_de_Cristo_(Tiziano).jpg
Notre_Dame_Street,_Montreal_(1841).jpg
Plage_à_Heist.jpg
La_fileuse,_chevrière_auvergnate.jpg
Saint_Louis,_roi_de_France,_et_un_page.jpg
Houghton_Typ_520.04.561_-_De_scientia_motvs_orbis.jpg
Manuel_Domínguez_Sánchez_-_El_suicidio_de_Séneca.jpg
Cellarius_ptolemaic_system.jpg
ModernEgypt,_Muhammad_Ali_by_Auguste_Couder,_BAP_17996.jpg
Aviceda_madagascariensis_1868.jpg
Cyanolanius_madagascarinus_1868.jpg
La_Virgen_de_los_Reyes_Católicos.jpg
Hélène_Bertaux_1864_par_Étienne_Carjat_BNF_Gallica.jpg
Raoul_de_Navery_BNF_Gallica.jpg
Une_Scène_de_Déluge_Girodet.jpg
Valentin_de_Boulogne_-_Soldiers_Playing_Cards_and_Dice_(The_Cheats).jpg
Mademoiselle_Duclos_Gallica.jpg
Caspar_David_Friedrich_039.jpg
El_dos_de_mayo_de_1808_en_Madrid.jpg
Johan_Georg_Forchhammer_large.jpg
Calicalicus_madagascariensis_1868.jpg
Xenopirostris_damii_1868.jpg
Philepitta_castanea_1868.jpg
Philepitta_schlegeli_1868.jpg
Alectroenas_sganzini_1868.jpg
Man_with_a_Saluki.jpeg
Diego_de_Alvear_y_Ponce_de_León.jpg
Abdul_Hamid_II_BNF_Gallica.jpg
Peter_Paul_Rubens_-_The_Birth_of_the_Milky_Way,_1636-1637.jpg
La_Marquise_de_Baglion_en_Flore,_Jean_Marc_Nattier,_Alte_Pinakothek_Munich.jpg
Banquet,_tombe_d'Agios_Athanasios.jpg
Adélaïde_Labille-Guiard_-_Self-Portrait_with_Two_Pupils_-_The_Metropolitan_Museum_of_Art.jpg
Guillaume_Ribier_Gallica.jpg
Bactrain camels.jpg
Camel in Egypt.jpg
Francisco_de_Goya_y_Lucientes_026.jpg
Doña_Isabel_la_Católica_dictando_su_testamento_(Rosales).jpg
Lepilemur_mustelinus_1868.jpg
Viverricula_indica_schlegelii_1868.jpg
La adoración de los pastores (El Greco).jpg
Louis_Meijer_-_Zelfportret.jpg
Marià_Fortuny_-_African_Beach_-_Google_Art_Project.jpg
Victor_Baltard_-_Church_of_Saint_Augustin,_Paris,_elevation_of_the_main_facade_-_Google_Art_Project.jpg
Handschrift_Brussel_p-37-38.jpg
Elie_duc_Decazes,_BNF_Gallica.jpg
Intérieur,_femme_en_bleu_fouillant_dans_une_armoire.jpg
Scuola_di_fontainebleau,_presunti_ritratti_di_gabrielle_d'estrées_sua_sorella_la_duchessa_di_villars,_1594_ca._06.jpg
Scuola_di_fontainebleau,_presunti_ritratti_di_gabrielle_d'estrées_sua_sorella_la_duchessa_di_villars,_1594_ca._-_detail_(1).jpg
La_Sibylle_de_Tibur.jpg
Piazzetta_Riva_degli_Schiavoni,_Canaletto,_WAF137,_Alte_Pinakothek_Munich.jpg
Pronghorn antelope herd.jpg
Impala African mammal.jpg
Five saints, Nardo di Cione, WAF 1027, Alte Pinakothek Munich.jpg
An_F-A-18C_Hornet_launches_from_the_flight_deck_of_the_conventionally_powered_aircraft_carrier.jpg
Bouvet_island_0.jpg
Hendrik_Merkus_Baron_de_Kock_by_Cornelis_Kruseman.jpg
A_Wilde_time_3.jpg
David_-_Napoleon_crossing_the_Alps_-_Malmaison1_detail1.jpg
Terms of Use   Search of the Day