Clumps of Neurons Help Scientists Study Gut Disorders: Scientific American These neurospheres—free-floating balls of glia (red), neurons (green) and stem cells—were cultivated in a lab from stem cells taken from the intestine or stomach of a mouse. Researchers use the neurospheres to test treatments for gut motility disorders, in which portions of the intestine, sometimes referred to as the second brain, lack sufficient nerve cells to function properly.
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Light micrograph of synapses between a motor neurone (tree-like) & skeletal muscle cells (bands in background). The end of the axon (large fibre) of a motor neurone in contact with a muscle cell divides into branches, each one terminating in a motor end plate on a different muscle fibre.
"Leprosy bacteria use 'biological alchemy'-Infectious bacteria have for the first time been caught performing "biological alchemy" to transform parts of a host body into those more suited to their purposes...The study...showed leprosy-causing bacteria turning nerves into stem cells and muscle...Prof Chris Mason, a specialist in stem cell research at University College London, said: "The ability of bacteria to convert one mammalian cell type to another is 'alchemy' by nature on a grand scale..."
Light-sheet microscopy Image of the ~50,000 cell nuclei of a 22-hour-old zebrafish embryo. The fluorescently labeled cell nuclei are shown in a blue-to-red color code that indicates depth in the image. Image from the lab of Philipp Keller at the Howard Hughes Medical Institute.
David Goodsell's Neuromuscular synapse. The acetylcholine-laden vesicles are carrying and releasing the neurotransmitter (ACh) from the neuron (upper 1/3) into the synaptic cleft (the middle pink section filled with laminin, collagen, perlecan and flower-like acetylcholinesterase). The muscle cell is the bottom 1/3.