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Quantum Gravity 3d rendered image of a comprehensive exploration of Quantum Gravity theories. String theory, loop quantum gravity (LOG), causal dynamical triangulation, twistor theory, gravitational waves, spacetime, gravity waves, quantum mechanics, quantum entanglement concepts.

Histological Pancreas human, Liver human, Vermiform appendix human and Kidney Human under the microscope for education.

smoke lung with black deposit in microscopy

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.

Old orange and black scuffed damaged marbled paper, Original over 150+ years old

The leaf epidermis under light microscope view has small pores, called stomata, which open up for photosynthetic gas exchange and transpiration.

Metastatic olfactory neuroblastoma or esthesioneuroblastoma. Microscopically show reactive change.

Abstract background Organic Form - 3d rendered image of glass structure, optical technology, nano electrical wave, dispersion colorful rainbow. Organic shapes and form. Science fiction or organic technology concept.

Cross-section Dicot, Monocot and Root of Plant Stem under the microscope for classroom education.

Carcinoid tumors are a type of slow-growing cancer that can arise in several places throughout your body. Carcinoid tumors, which are one subset of tumors called neuroendocrine tumors, usually begin in the digestive tract (stomach, appendix, small intestine, colon, rectum) or in the lungs. Site: Ovary

Colored plant cells with damages caused by a parasitic animal under the microscope.

$plant Flower bud of Lilium brownii var.viridulum T.S.\nunder light mircoscope with white background$

Prostate Cancer: Microscopic image of prostatic tissue, adenocarcinoma, malignant neoplasm, atypical epithelial cells.

Close-up shooting of a green agate stone mineral surface isolated on white background. Its a macro shot shows nature beautiful details with back lit. Agate is a kind of natural gemstone. Abstract pattern. Good for Wallpaper texture background. Purple

Dicot plants stem show plant vascular tissue under light microscope view for botany education.

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.

Host cells with spores (mold) are inside wood under the microscope for education.

Banana circle portion on white background. Clipping path included.Tropical fruits from

Glycolic acid is a type of alpha hydroxy acid (AHA). Alpha hydroxy acids are natural acids found in foods. Glycolic acid comes from sugarcane. Alpha hydroxy acids like glycolic acid work by removing the top layers of dead skin cells. Glycolic acid also seems to help reverse sun damage to the skin.

Neuroendocrine carcinoma well differentiated (carcinoid) rectum with immunostain synaptophysin

$Wet rough asphalt black bitumen road pavement surface abstract grunge texture close-up top view background banner.\nBitumen is a sticky, black, highly viscous liquid or semi-solid form of petroleum. In the U.S., it is commonly referred to as asphalt. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used.\nTarmacadam is a road surfacing material made by combining crushed stone, sand, and tar. It is a more durable and dust-free enhancement of simple compacted stone macadam surfaces. The terms \$

abstract alloy texture design background.

Characteristics of fungi living in wood as a group, are polyphyletic under the microscope for education.

Close up of texture and colors of the bottom of a burnt pot.

Human Hyaline cartilage bone under microscope view for education histology. Human tissue.

Free Images: "bestof:Portrait of Mishima Okujiro 2.jpg 三島億二郎肖像画� �（渡辺幽香画� �長岡市立中央図書館蔵） Nagaoka City Central Library 不明�"

Nagaoka jouka nenju gyouji zue - Nenshi tojo.jpg

Echigo Koshi-no-kōri Nijū-mura Tōgyū no zu.jpg

[Postcard]._"I_voted_for_Fisher;_I_wish_I_had"_/_City_Printing_Co[mpan]y,_Wellington._[1908].jpg

Corner window of the Parker Cabin at Log Cabin Village, a house museum consisting of saved rural cabins moved to a central site in Fort Worth, Texas LCCN2015630840.tif.tiff

The Marine School at Log Cabin Village, a house museum consisting of saved rural cabins moved to a central site in Fort Worth, Texas LCCN2015630839.tif.tiff

Syr_Darya_Oblast._City_of_Khodzhent._Butcher_WDL10930.png

Syr_Darya_Oblast._City_of_Khodzhent._Mendicant_Water_Carrier_WDL10931.png

Syr_Darya_Oblast._City_of_Khodzhent._Water_Carrier_WDL10933.png

Zeravshan_District._City_of_Samarkand._Fumigation_of_the_Sick_WDL11147.png

Zeravshan_District._City_of_Samarkand._Vendor_of_Turbans_WDL11153.png

Zeravshan_District._City_of_Samarkand._Knife_Vendor_WDL11156.png

Zeravshan_District._City_of_Samarkand._Trunk_Vendor_WDL11158.png

Antiquities_of_Samarkand._Mausoleum_of_Khodzha_Abdu-Derun._General_View_of_the_Gallery_for_Contemplation_of_the_Saint's_Tomb_WDL3733.png

Syr_Darya_Oblast._City_of_Dzhizak_and_the_Types_of_People_Seen_at_the_Market._Water_Carrier_WDL10922.png

Syr_Darya_Oblast._City_of_Ura_Tiube_and_the_Types_of_People_Seen_on_Its_Streets._Market_Square._Mendicant_WDL10962.png

Syr_Darya_Oblast._City_of_Ura_Tiube_and_the_Types_of_People_Seen_on_Its_Streets._Market_Square._Mender_of_Broken_Dishes_WDL10963.png

Syr_Darya_Oblast._City_of_Dzhizak_and_the_Types_of_People_Seen_at_the_Market._Pastry_Vendor_WDL10918.png

Syr_Darya_Oblast._City_of_Dzhizak_and_the_Types_of_People_Seen_at_the_Market._Vendor_of_Animal_Hides_WDL10919.png

Syr_Darya_Oblast._City_of_Tashkent_and_the_Types_of_People_Seen_on_Its_Streets._A_Dervish_Playing_an_Instrument_WDL10952.png

Syr_Darya_Oblast._City_of_Tashkent_and_the_Types_of_People_Seen_on_Its_Streets._Falconer_WDL10954.png

Syr_Darya_Oblast._City_of_Ura_Tiube_and_the_Types_of_People_Seen_on_Its_Streets._Market_Square._Water_Carrier_WDL10964.png

Types_of_Nationalities_in_the_Turkestan_Krai._Uzbeks._Dzhura_Bii,_Former_Beg_of_Shahrisabz_in_the_City_of_Kitab_WDL11105.png

Zeravshan_District._City_of_Samarkand_and_the_Types_of_People_Seen_in_Its_Streets._A_Cobbler_WDL11139.png

Zeravshan_District._City_of_Samarkand_and_the_Types_of_People_Seen_in_Its_Streets._A_Day_Laborer_WDL11140.png

Zeravshan_District._City_of_Samarkand_and_the_Types_of_People_Seen_in_Its_Streets._Candy_Vendor_WDL11142.png

Zeravshan_District._City_of_Samarkand_and_the_Types_of_People_Seen_in_Its_Streets._Selling_Snuff_WDL11143.png

Zeravshan_District._City_of_Samarkand_and_the_Types_of_People_Seen_in_Its_Streets._Grilling_Meat_on_a_Spit_WDL11144.png

Zeravshan_District._City_of_Samarkand._Vendor_of_Ready-made_Shirts_and_other_Clothing_WDL11154.png

Zeravshan_District._City_of_Samarkand._Vendor_of_Yarmulkas_and_Fur_Hats_WDL11155.png

Zeravshan_District._City_of_Samarkand._Pastry_Vendor_WDL11157.png

Zeravshan_District._City_of_Samarkand._Selling_Coarse_Cotton_Fabric_WDL11159.png

Zeravshan_District._City_of_Samarkand._Selling_Fabric_in_Covered_Stalls_WDL11160.png

Antiquities_of_Samarkand._Mausoleum_of_Khodzha_Abdu-Derun._Window_from_the_Tomb_of_the_Saint_Looking_out_into_the_Gallery_Called_a_Ziaretga_WDL3735.png

Antiquities_of_Samarkand._Madrasah_of_Bibi_Khanym._Congregational_Mosque._Column_Base_WDL3757.png