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Gallbladder Surface, SEMScanning electron micrograph (SEM) of the surface of the gallbladder. The epithelial layer is br...
03/09/2022

Gallbladder Surface, SEM

Scanning electron micrograph (SEM) of the surface of the gallbladder. The epithelial layer is broken up and reveals the view of the cell interior. You can see epithelial cells (brown) with microvilli (green). Inside some of the cells, the cell nucleus is recognizable (reddish), underneath which lies the connective tissue (gray) that envelops and stabilizes everything.

The gallbladder is a pear-shaped mucous sac that serves as a reservoir for the bile fluid produced in the liver. Bile is released into the stomach after ingestion, where it plays an important role in the digestion of fats. Medicines and other "waste products" filtered out by the liver are also contained in the bile and are excreted in this way.

Magnification: 1500x at a size of 12x12cm.

© Eye of Science / Science Source

ScienceSource.com image ID# SS21025703

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https://www.sciencesource.com/archive/Image/Gallbladder--SEM-SS21025703.html

#gallbladder ##liver #gall #bladder #bile #epithelial #epithelium #microvilli #histology #cells #biology #biologyteacher #biologyclass #scienceclass #sem #digestivesystem #healthyeating #healthy #nutrition #scanningelectronmicroscopy #microscopy #sciart #scienceart #alwayslearning #scienceteacher #science #homeschoolscience #stockphoto #stockphotography

12/08/2021

Hair Raising! - "Piloerection"

Close-up of fine hairs on a human arm rising and falling. Skin hairs rise in response to stimuli including cold, fear and awe. Technically known as piloerection, it is produced by the contraction of a small muscle (the arrector pili) at the base of each hair.

© SPL Motion / Science Source

ScienceSource.com ID# SS277212

Click on the link for this clip and for more science and medical content.

https://www.sciencesource.com/archive/Video/Arm-hairs-rising-and-falling-SS277212.html

Music: "Also sprach Zarathustra" by Strauss
Kevin MacLeod (Creative Commons Attribution 3.0 Unported license)

#piloerection #hair #hairraising #fear #awe #chill #cold #goosebumps #goosepimples #dermatology #dermatologist #AlsosprachZarathustra #2001spaceodyssey #spaceodyssey #pilomotorreflex #reflex #stimuli #armhair #arrectorpili #sciart #scienceart #alwayslearning #scienceteacher #science #homeschoolscience #stockvideo #sciencevideo #biology #biologyteacher #biologyclass

Schistosomiasis (Bilharzia) in HumansThese flukes cause schistosomiasis (bilharzia) in humans.  The male wraps around th...
12/06/2021

Schistosomiasis (Bilharzia) in Humans

These flukes cause schistosomiasis (bilharzia) in humans. The male wraps around the narrow female. These worms live in the veins around the large intestine. During mating, the male holds the female in a groove known as the gynaecophoric canal, which he forms by folding the sides of his body around her. The eggs produced by the female leave the body in the feces, but can also form fibrous obstructions of tissues and vessels known as granulomas.

The flukes live in the veins of the intestines and bladder, attaching to blood vessel walls using a suction pad. Bilharzia is endemic in tropical countries, and causes liver and kidney damage. It is treatable with drugs.

Click on the link for these images and for more science and medical content (including video!).⁠

https://www.sciencesource.com/CS.aspx?VP3=DamView&VBID=2OPVHKLQ3399L&SMLS=1&RW=1371&RH=619

Image 1: Mating schistosome flukes. Color enhanced scanning electron micrograph (SEM) of a pair of schistosome flukes (Schistosoma mansoni) mating.
© Juergen Berger / Science Source
ScienceSource.com image ID# SS21533895

Image 2: SEM of male and female pair of Schitosoma parasites together.
© Eye of Science/Science Source
ScienceSource.com image ID# SS2136635

Image 3: SEM of the head of an adult male Schistosoma mansoni parasitic fluke.
Credit: NIBSC / Science Source
ScienceSource.com image ID# SS2165783

Image 4: SEM of male and female parasitic Schistosoma blood fluke.
© The Natural History Museum, London / Science Source
ScienceSource.com image ID# SS2912247

#schistosomiasis #schistosoma #schistosomamansoni #bloodfluke #worm #fluke #flatworm #worms #parasite #parasites #bloodflukes #bilharzia #parasitic #parasitology #parasitologist #biology #biologyteacher #biologyclass #bloodsucker #humanparasite #humanparasites #sem #scanningelectronmicroscopy #microscopy #sciart #scienceart #alwayslearning #scienceteacher #science #homeschoolscience #gynaecophoriccanal #stockphoto #stockphotography

Molnupiravir - a new treatment for mild to moderate COVID-19 that was just approved  for use in the UK. Click on the fol...
11/05/2021

Molnupiravir - a new treatment for mild to moderate COVID-19 that was just approved for use in the UK.

Click on the following link to license this image (RF) and for more science and medical content (including video!).⁠

https://www.sciencesource.com/archive/Image/Molnupiravir--a-new-drug-against-COVID-19-SS1323658.html

Molnupiravir increases the frequency of viral RNA mutations and impairs SARS-CoV-2 replication. The viral RNA-dependent RNA polymerase (blue) uses the active form of Molnupiravir, β-D-N4-hydroxycytidine (NHC) triphosphate, as a substrate instead of cytidine triphosphate or uridine triphosphate, NHC induces the incorporation of wrong base pairs in the replicated RNA string (orange).

© Juan Gaertner/Science Source

#Molnupiravir #NHC #biomedical #biomedicalengineering #virology #virologist #biologyteacher #biologyclass #covid19 #coronavirus #quarantine #virus #globalpandemic #pandemic #coronavirusnews #coronavirusupdate #coronavirusoutbreak #covid19news #covidtreatment #covidtreatments #sciart #scienceart #alwayslearning #scienceteacher #science #stockphoto #stockphotography #pharmacology #antiviral

Soybean cross sectionThe dry bean contains 37-46% protein and 15-20% fat. Scanning electron micrograph.  Magnification 4...
11/03/2021

Soybean cross section

The dry bean contains 37-46% protein and 15-20% fat. Scanning electron micrograph. Magnification 470x at 10 cm wide.

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https://prints.sciencesource.com/featured/soy-grain-meckesottawa.html

© Eye of Science / Science Source

ScienceSource.com image ID# SS291368

#soy #soybean #soya #Glycine #Glycinemax #soyabean #soybeans #soyabeans #soymilk #tofu #nutrition #healthyeating #agriculture #agriscience #foodscience #vegan #vegetarian #sem #soysauce #eatingwell #scanningelectronmicroscopy #microscopy #sciart #scienceart #alwayslearning #scienceteacher #science #homeschoolscience #stockphoto #stockphotography

College Fibers, TEM ShadowcastClick on the following link for wall art, masks and other merch based on this topic and ma...
10/25/2021

College Fibers, TEM Shadowcast

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https://prints.sciencesource.com/art/collagen

Color enhanced shadowcast transmission electron micrograph (TEM) of collagen fibers. Formed from precursor proteins, collagen fibers provide tensile strength in tissues. In the fibrillar collagens, molecules are staggered to adjacent molecules by about 67 nm.

Collagen is the main structural protein found in the body's various connective tissues. It is the most abundant protein in mammals, making up about 30% of the whole-body protein content. Collagen consists of amino acids bound together to form a triple helix of elongated fibril known as a collagen helix. It is mostly found in connective tissue such as cartilage, bones, tendons, ligaments, and skin. Depending upon the degree of mineralization, collagen tissues may be rigid (bone) or compliant (tendon) or have a gradient from rigid to compliant (cartilage).

Shadowcasting is a technique to obliquely deposit metals of a high scattering power with a low angle to the specimen surface of a biological specimen. By shadowing, the TEM image has increased contrast due to roughness of the surface of those specimens.

© Biophoto Associates/Science Source

ScienceSource.com image ID# SS2133322

#collagen #collagenpeptides #collagenpowder #collagendrink #collagenprotein #elastin #purecollagen #heath #healthy #biology #bioengineering #bioengineer #engineer #engineering #biologist #biologyteacher #tem #transmissionectronmicroscopy #microscopy #sciart #scienceart #alwayslearning #scienceteacher #science #homeschoolscience #stockphoto #stockphotography #instagood #skin #healthyskin

Mid-Body at the End of MitosisAll images © David M. Phillips / Science SourceThe midbody is a structure found in mammali...
10/22/2021

Mid-Body at the End of Mitosis

All images © David M. Phillips / Science Source

The midbody is a structure found in mammalian cells and is found near the end of cytokinesis just prior to the complete separation of the dividing cells. The structure was first described by Walther Flemming in 1891. The central section of a midbody was named after Flemming and is called the Flemming body.

The midbody structure contains bundles of microtubules derived from the mitotic spindle which compacts during the final stages of cell division. It has a typical diameter of 1 micrometer and a length of 3 to 5 micrometers. It also contains various proteins involved in cytokinesis, asymmetric cell division, and chromosome segregation. The midbody appears to be important for completing the final stages of cytokinesis, a process called abscission.

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https://prints.sciencesource.com/art/tem+midbody

Image 1) Transmission Electron Micrograph (TEM) showing the midbody between two epithelial
cells that have just divided.
ScienceSource.com image ID# SS2517391

Image 2) Transmission electron micrograph showing mitosis. Midbody microtubules. Microtubules are hollow cylindrical structure in the cytoplasm of most cells, involved in intracellular shape and transport.
ScienceSource.com image ID# SS2491266

Image 3)Transmission electron micrograph showing mitosis - midbody. Mouse, fibroblast in culture.
ScienceSource.com image ID# SS2627266

#midbody #mitosis #mitotic #microtubule #microtubules #organelles #organelle #celldivision #cellbiology #cellbiologust #biologist #biology #microbiology #microbiologiust #engineer #enginnering #bioengineering #bioengineer #tem #transmissionelectronmicroscopy #microscopy #sciart #scienceart #alwayslearning #scienceteacher #science #homeschoolscience #stockphoto #stockphotography

Corn StemFluorescent light microscope image of cross section of a corn stem (Zea mays).  Click on the following link for...
10/21/2021

Corn Stem

Fluorescent light microscope image of cross section of a corn stem (Zea mays).

Click on the following link for wall art, masks and other merch based on this image and many other science images.⁠

http://prints.sciencesource.com/featured/switch.html?catalogid=5V4533

Zea is a genus of flowering plants in the grass family. Zea mays (corn, maize) is one of the most important crops for human societies throughout the world.

Zea has a monocot stem vascular arrangement. Vascular tissues transport water and dissolved substances inside the plant and helps support the stem. The two types of vascular tissue are xylem and phloem. Xylem carries water and dissolved ions from the roots to stems and leaves. Phloem carries dissolved sugars from the leaves to all other parts of the plant. Xylem has two kinds of conducting cells, tracheids and vessel elements. Ground tissue of the stem (pith and cortex) develops support cells to hold the young plant upright.

The monocot stem has a random arrangement of vascular bundles with more of the bundles located toward the stem periphery than in the center.

© P. Dayanandan / Science Source

ScienceSource.com image ID# SS2109284

#zea #zeamays #maize #corn #plant #plants #botany #botanist #engineering #engineer #microscopy #sciart #scienceart #alwayslearning #scienceteacher #science #homeschoolscience #stockphoto #stockphotography #biology #biologyclass #biologyteacher #merch #sicencemerch #sciencegifts #instacool #photography #art #blue #fluorescent

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Une amibe vampire? Vampyrella lateritia est une amibe appartenant au groupe des Rhizopodes et à l'ordre des Vampyrellida. Au stade trophozoite, elle peut se déplacer et percer la paroi des algues dont elle se nourrit de l'intérieur, tel un vampire végétarien! Via Science Source Images