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Microscopic photo of a thin section of calcareous tufa of Holocene age.

Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.

Micrograph of a moss leaf, Dicranum, with elongated cells, and an elongated midrib (costa) that may be the water conducting cells of the leaf, with polarization at 200x.

Bone marrow plasma cells .Plasma cell neoplasms are diseases in which the body makes too many plasma cells. Plasma cell neoplasms can be benign or malignant. Diagnosed with Immunostain CD138 positive.

Epidermis. Electron microscope micrograph of an epidermis spinous layer. The keratinocytes show polygonal shapes, central nucleus with nucleolus, cytoplasm full of keratin filament bundles, and numerous desmosomes crossing the intercellular spaces.

Cheyletiella blakei Mite - Small Cat pest view under a microscope

Aerial view of loyster farm by Ardara, County Donegal - Ireland.

Different germs in the human intestines called microbiome,Bacteria Lactobacillus in human intestine,Beneficial healthy intestinal bacterium microflora,Gut bacteria

Aspergillus (mold) for Microbiology in Lab.

plant Pine Cone-Female L.S. under light mircoscope with white background

Microscope photo of a sambucus stem with parenchyma cells.

Natural agate surfaces, suitable for backgrounds and wallpapers.

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.

Bacillus gram positive stain under the microscope view. Bacillus is rod-shaped bacteria.

Epidermis. Electron microscope micrograph showing a keratinocyte of spinous layer. The epithelial cell has a polygonal shape, central nucleus with nucleolus, cytoplasm full of keratin filament bundles, and numerous dark desmosomes crossing the intercellular spaces.

Backlit composition on white background of different microbes growing on colture media

Freshwater Closterium algae (unicellular charophyte green algae) - optical microscope x200 magnification

Photomicrograph of two rotifers. Rapidly rotating cilia at top of heads, internal organs visible. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.

Euglena is a genus of single cell flagellate eukaryotes under microscopic view for study.

$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 \$

Liver Fluke Section under light microscope with white background

Slice of natural crystal for patterns and textures use with high resolution.

background colored macro bubbles of water

Aerial view of natural shapes and textures on Dried Salt Lake. Aci Gol (Acı Göl) in Denizli, Turkey. Taken via drone.

Free Images: "bestof:Clostridium difficile EM.png Obtained after an outbreak this micrograph depicts Gram-positive Clostridium difficile bacteria These C difficile organisms were"

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Layla, Issue 7, April 15, 1924 WDL2845.jpg

Layla, Issue 8, May 15, 1924 WDL2846.jpg

Layla, Issue 9, June 15, 1924 WDL2857.jpg

Layla, Issue 10, July 15, 1924 WDL2858.jpg

Layla, Issue 2, December 1924 WDL2860.jpg

Layla, Issue 3, January 1925 WDL2861.jpg

Layla, Issue 4, February 1925 WDL2862.jpg

Layla, Issue 10, August 1925 WDL3033.jpg

Layla, Issue 2, November 15, 1923 WDL3055.jpg

Layla, Issue 3, December 15, 1923 WDL3056.jpg

Layla, Issue 4, January 15, 1924 WDL342.jpg

Layla, Issue 5, February 15, 1924 WDL452.jpg