Wilson Bentley's Snowflake 920 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798905/free-photo-image-snow-snowflake-winterFree Image from public domain licenseWilson Bentley's Snowflake 562 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798883/free-photo-image-snowflake-snow-winterFree Image from public domain licensePhotomicrograph of Stellar Snowflake No. 586 (1890), vintage photo by Wilson Alwyn Bentley. Original public domain image… https://www.rawpixel.com/image/12230778/image-art-vintage-public-domainFree Image from public domain licensePNG Snowflake, vintage photo by Wilson Alwyn Bentley, transparent background. Remixed by rawpixel. https://www.rawpixel.com/image/12364875/png-art-vintageView licenseWilson Bentley's Snowflake 1152 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798898/free-photo-image-snowflake-winter-snowFree Image from public domain licenseWilson Bentley's Snowflake 234 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798923/free-photo-image-snowflake-crystal-vintageFree Image from public domain licenseGreen coronavirus under a microscope. Original image sourced from US Government department: Public Health Image Library… https://www.rawpixel.com/image/2282449/free-photo-image-virus-science-greenFree Image from public domain licenseA 440X photomicrograph magnification of a hematoxylin and eosin (H&E)–stained liver tissue specimen, revealed the… https://www.rawpixel.com/image/2288342/free-photo-image-liver-biology-microscopeFree Image from public domain licenseWilson Bentley Photomicrograph of Fernlike Stellar Snowflake No. 1095 by Wilson Bentley https://www.rawpixel.com/image/9067243/photo-image-vintage-public-domain-snowflakesFree Image from public domain licenseWilson Bentley Photomicrograph of Stellar Snowflake No. 1093 by Wilson Bentley https://www.rawpixel.com/image/9067182/photo-image-vintage-public-domain-snowflakesFree Image from public domain licenseRouleaux of blood corpuscles. Photomicrograph by Léon Foucault, 1844. https://www.rawpixel.com/image/13966574/rouleaux-blood-corpuscles-photomicrograph-leon-foucault-1844Free Image from public domain licenseWilson Bentley's Snowflake 332 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798916/free-photo-image-snowflake-winter-crystalFree Image from public domain licenseWilson Bentley's Snowflake 579A (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798875/free-photo-image-snowflake-snow-winterFree Image from public domain licenseWilson Bentley's Snowflake 990 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798890/free-photo-image-snowflake-snow-flakesFree Image from public domain licenseWilson Bentley's Snowflake 10 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798878/free-photo-image-crystal-snowflake-winterFree Image from public domain licenseWilson Bentley's Snowflake 342 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798877/free-photo-image-snowflake-snow-flakeFree Image from public domain licenseWilson Bentley's Snowflake 976 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798930/free-photo-image-winter-snowflake-snow-flakeFree Image from public domain licenseWilson Bentley's Snowflake 10 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798889/free-photo-image-snowflake-crystal-vintageFree Image from public domain licenseWilson Bentley's Snowflake 951 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798879/free-photo-image-snowflake-crystal-snowFree Image from public domain licenseWilson Bentley's Snowflake 10 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798891/free-photo-image-crystal-snowflake-vintageFree Image from public domain licenseWilson Bentley's Snowflake 482 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798882/free-photo-image-snowflake-snow-crystalFree Image from public domain licenseSnowflake poster, vintage photograph of snowflakes (1890) in high resolution by Wilson Alwyn Bentley. Original from The… https://www.rawpixel.com/image/3886369/illustration-image-art-black-vintageView licenseA 1000X photomicrograph magnification of numerous, rod-shaped, Gram–negative, Yersinia pestis bacilli. https://www.rawpixel.com/image/2288448/free-photo-image-bacteria-laboratory-microscopeFree Image from public domain licenseWilson Bentley Photomicrograph of Fernlike Stellar Snowflake No. 542A by Wilson Bentley https://www.rawpixel.com/image/9067185/photo-image-vintage-public-domain-snowflakesFree Image from public domain licenseGreen coronavirus under a microscope. Original image sourced from US Government department: Public Health Image Library… https://www.rawpixel.com/image/2282451/free-photo-image-immune-cell-parasite-green-backgroundFree Image from public domain licenseLiving organisms under a microscopic view. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282440/free-photo-image-science-immune-cell-hela-cellsFree Image from public domain licenseWilson Bentley Photomicrograph of Stellar Snowflake No. 826 by Wilson Bentley https://www.rawpixel.com/image/9067235/photo-image-vintage-public-domain-snowflakesFree Image from public domain licenseSnowflake, vintage photo by Wilson Alwyn Bentley. Remixed by rawpixel. https://www.rawpixel.com/image/12364887/snowflake-vintage-photo-wilson-alwyn-bentley-remixed-rawpixelView licenseSnowflake, vintage photo by Wilson Alwyn Bentley psd. Remixed by rawpixel. https://www.rawpixel.com/image/12364897/snowflake-vintage-photo-wilson-alwyn-bentley-psd-remixed-rawpixelView licenseWilson Bentley's Snowflake 1205 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798880/free-photo-image-snowflake-crystal-winterFree Image from public domain licenseWilson Bentley's Snowflake 349 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798886/free-photo-image-microscope-snowflake-crystalFree Image from public domain licenseWilson Bentley's Snowflake 1225 (ca. 1890) detailed photograph of snowflakes in high resolution by Wilson Alwyn Bentley.… https://www.rawpixel.com/image/2798876/free-photo-image-snow-snowflake-blackFree Image from public domain licenseA 200X photomicrograph magnification of a direct fluorescent antibody (DFA) stained sample revealed the presence of rod… https://www.rawpixel.com/image/2288444/free-photo-image-bacteria-laboratoryFree Image from public domain licenseA photomicrograph reveals the presence of numerous, rod-shaped, Gram–negative, Yersinia pestis bacilli. https://www.rawpixel.com/image/2288446/free-photo-image-bacteria-medical-organs-microscopeFree Image from public domain licenseA 100X photomicrograph magnification of a hematoxylin and eosin (H&E)–stained liver tissue specimen, revealed the… https://www.rawpixel.com/image/2288361/free-photo-image-microscope-liver-medicalFree Image from public domain licensePhotomicrograph of Giemsa stained lung tissue. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282504/free-photo-image-lung-cell-purple-abstractFree Image from public domain licenseA 100X photomicrograph magnification of photomicrograph of a hematoxylin and eosin (H&E) stained liver tissue specimen… https://www.rawpixel.com/image/2288334/free-photo-image-liver-biology-scienceFree Image from public domain licensePng snowflake framed sticker, on transparent background https://www.rawpixel.com/image/6574849/png-frame-stickerView licenseA 100X photomicrograph magnification of histopathologic morphology associated with the agriculturally–related… https://www.rawpixel.com/image/2288356/free-photo-image-microscope-antibody-virusFree Image from public domain licensePhotomicrograph of Giemsa stained lung tissue. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282485/free-photo-image-yeast-abstract-parasiteFree Image from public domain licenseA 1125X photomicrograph magnification of Giemsa stained blood smear, revealed a number of Plasmodium falciparum parasites… https://www.rawpixel.com/image/2288371/free-photo-image-algae-microscope-blood-cellFree Image from public domain licenseA 440X photomicrograph magnification of a hematoxylin and eosin (H&E)–stained liver tissue specimen, revealed the… https://www.rawpixel.com/image/2288347/free-photo-image-liver-organ-medical-organs-tissueFree Image from public domain licenseA 1125X photomicrograph magnification of a Giemsa stained, thin film blood smear, revealed a mature, Plasmodium malariae… https://www.rawpixel.com/image/2288374/free-photo-image-algae-blood-cells-microscopeFree Image from public domain licenseA photomicrograph reveals numerous Gram–negative, Francisella tularensis coccobacilli, the bacterium responsible for… https://www.rawpixel.com/image/2288585/free-photo-image-microscope-cdc-gram-negative-bacteriaFree Image from public domain licenseA 100X photomicrograph magnification of a malachite green spore stained sample, revealed the presence of numerous Bacillus… https://www.rawpixel.com/image/2288583/free-photo-image-microscope-bacteria-medical-organsFree Image from public domain licenseA 1000X photomicrograph magnification of a direct fluorescent antibody (DFA)–stained specimen, revealing the presence… https://www.rawpixel.com/image/2288586/free-photo-image-biology-microscope-fluorescent-antibodyFree Image from public domain licensePhotomicrograph of a blood smear specimen. Original image sourced from US Government department: Public Health Image… https://www.rawpixel.com/image/2282493/free-photo-image-pink-blood-cell-intestinal-parasiteFree Image from public domain licensePhotomicrograph of a parasite. Original image sourced from US Government department: Public Health Image Library, Centers… https://www.rawpixel.com/image/2282491/free-photo-image-leishmania-germ-gastrointestinalFree Image from public domain licenseA 125X photomicrograph magnification of a hematoxylin and eosin (H&E)–stained lung tissue specimen, revealed the… https://www.rawpixel.com/image/2288370/free-photo-image-microscope-medical-organs-tissueFree Image from public domain licenseA photomicrograph of a direct fluorescent antibody (DFA)–stained specimen, revealing the presence of numerous… https://www.rawpixel.com/image/2288587/free-photo-image-antibody-awarenessFree Image from public domain licenseSpermatozoa of a mouse. Photomicrograph by Léon Foucault, 1844. https://www.rawpixel.com/image/13970268/spermatozoa-mouse-photomicrograph-leon-foucault-1844Free Image from public domain licenseMacro snowflake artwork in decorative Rococo frame, remixed by rawpixel https://www.rawpixel.com/image/6574867/image-frame-aesthetic-vintageView licenseMacro snowflake png artwork sticker, transparent background, remixed by rawpixel. https://www.rawpixel.com/image/6574846/png-frame-aestheticView licensePhotomicrograph of a Brachiopod (1904 - 1906) by James McDonald. https://www.rawpixel.com/image/13029822/photomicrograph-brachiopod-1904-1906-james-mcdonaldFree Image from public domain licenseSpermatozoa of a frog. Photomicrograph by Léon Foucault, 1844. https://www.rawpixel.com/image/13988034/spermatozoa-frog-photomicrograph-leon-foucault-1844Free Image from public domain licenseThe sandfly Phlebotomus argentipes, the transmitter of kala-azar disease, feeding on a mammal. Photomicrograph, 1900/1950. https://www.rawpixel.com/image/13978716/photo-image-person-space-moonFree Image from public domain licenseDentinal tubules. Transverse ground section by Dr Alfred Gysi https://www.rawpixel.com/image/14323143/dentinal-tubules-transverse-ground-section-alfred-gysiFree Image from public domain licenseSnowflake framed image https://www.rawpixel.com/image/6574869/snowflake-framed-imageView licenseEnamel showing "Stripes of Schreger" and "Parallelstripes of Retzins" by Dr Alfred Gysi https://www.rawpixel.com/image/14323437/image-book-art-clothingFree Image from public domain licenseTransverse ground sections through enamel by Dr Alfred Gysi https://www.rawpixel.com/image/14323414/transverse-ground-sections-through-enamel-alfred-gysiFree Image from public domain licenseMalarial infection: a cross-section of blood cells (from the work of Alphonse Laveran). Photograph, ca. 1890. https://www.rawpixel.com/image/13975166/image-cross-art-circleFree Image from public domain licensePhotomicrograph of a Section of a Plant by William Henry Fox Talbot https://www.rawpixel.com/image/14313552/photomicrograph-section-plant-william-henry-fox-talbotFree Image from public domain licenseGelatine-yielding fibrills of the dentine by Dr Alfred Gysi https://www.rawpixel.com/image/14323007/gelatine-yielding-fibrills-the-dentine-alfred-gysiFree Image from public domain licenseYellow fever: section of brain of a patient infected with yellow fever. Photograph, 1900/1920 . https://www.rawpixel.com/image/14009092/photo-image-background-frame-artFree Image from public domain licenseBlood corpuscles of a frog. Photomicrograph by Léon Foucault, 1844. https://www.rawpixel.com/image/14003126/blood-corpuscles-frog-photomicrograph-leon-foucault-1844Free Image from public domain licenseBlood corpuscles of a frog. Photomicrograph by Léon Foucault, 1844. https://www.rawpixel.com/image/13987145/blood-corpuscles-frog-photomicrograph-leon-foucault-1844Free Image from public domain licensePhotomicrograph of the surface of a Brachiopod (1904 - 1906) by James McDonald. https://www.rawpixel.com/image/13029814/photomicrograph-the-surface-brachiopod-1904-1906-james-mcdonaldFree Image from public domain licenseOdontoblasts, showing Tomes's fibers entering the dentinal tubules by Dr Alfred Gysi https://www.rawpixel.com/image/14322174/image-book-art-public-domainFree Image from public domain licenseDentinal tubules and interglobular spaces by Dr Alfred Gysi https://www.rawpixel.com/image/14323409/dentinal-tubules-and-interglobular-spaces-alfred-gysiFree Image from public domain licenseThe Wellcome Building, Euston Road, London: a device for viewing photomicrographs in the Wellcome Museum of Medical Science.… https://www.rawpixel.com/image/14020363/photo-image-art-road-public-domainFree Image from public domain licenseOdontoblasts and connetive tissue cells (child 14 years) by Dr Alfred Gysi https://www.rawpixel.com/image/14322776/odontoblasts-and-connetive-tissue-cells-child-years-alfred-gysiFree Image from public domain licenseThe sandfly Phlebotomus argentipes: longitudinal section of abdomen. Photomicrograph, 1900/1950. https://www.rawpixel.com/image/13976978/photo-image-person-art-patternFree Image from public domain license