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Osteoblast or bone-forming cell, growing on a new type of bone scaffold being developed to repair damaged bones. The scaffold is made of calcium oxide and silicon dioxide with added strontium and zinc to help the bone cells to grow better. Visualized using scanning electron microscopy by Dr Guocheng Wang and Dr Zufu Lu, University of Sydney.

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In recent years, scientists have come up with new ways to hack the physics of light, to invent the most powerful microscopes the world has ever seen.

Epithelial cells - Image of the Week - July 20, 2015

CIL:48102 - http://www.cellimagelibrary.org/images/48102

Description: Cryopreserved human mammary epithelial cells were revived and stained for cytokeratin 18 (in red) to reveal the keratin-containing intermediate filaments found in the intracytoplasmic cytoskeleton of epithelial tissue, E-cadherin (in green) to visualize the calcium-dependent cell-cell adhesion glycoprotein, and DAPI (in blue) to label nuclei.

Author: Natalie Prigozhina

Licensing: Attribution Only: This image is licensed under a Creative Commons Attribution License

Look at this chubby baby! 

What you’re looking at is a freshwater hydra (Hydra viridissima) that forms a symbiotic relationship with algae. It gets some of its energy through photosynthesis, and the rest of it from snaring small prey with those stinging tentacles. 

And it’s biologically immortal. This one I found is only a few weeks old, but it may end up outliving me, or all of human civilization. Not likely, but I’d like to imagine it might happen. 

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These are the microscopic examinations of the faeces of a budgerigar. The bird was grouped with other budgerigars. 5% of them acutely died, without any clinical signs. Autopsy showed light pale kidneys and dark lungs. What is your diagnosis and what is the pathogenesis that explains the autopsy signs?

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H&E stain on a stomach in medium and high power. Hematoxylin stains the nuclei purple and the eosin stains the cytoplasm (collagen, muscle, RBC’s, etc.) various shades of pink. Most routine stain done in histology.