Scientists have found a way to create embryonic stem cells without using an embryo or without introducing genetic material. The discovery could revolutionize medicine by giving doctors a way to repair diseased and damaged tissue — think heart disease, blindness, skin burns — with organs and tissue grown from the patient’s own cells.
The Fraunhofer Institute for Solar Energy Systems ISE, Soitec, CEA-Leti and the Helmholtz Center Berlin jointly announced today having achieved a new world record for the conversion of sunlight into electricity using a new solar cell structure with four solar subcells. Surpassing competition after only over three years of research, and entering the roadmap at world class level, a new record efficiency of 44.7% was measured at a concentration of 297 suns.
In the lab, UGA scientists injected nanoparticles (NPs) into the mitochondria of cancer cells and activated the NPs with laser light to produce reactive oxygen species (ROS), causing cell death via apoptosis and necrosis. The dead cancer cells activated dendritic cells. When injected into the body, the dendritic cells then signaled T-cells to attack cancer cells. (Credit: Sean Marrache et al./ACS Nano)
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