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Human embryonic stem cell (gold) growing on a layer of supporting cells (fibroblasts). Stem cells are derived from very early embryos and can either be grown to stay in their original state or triggered to form almost any type of human cell. The fibroblasts provide special factors that maintain the stem cells in their original state. The stem cell appears to be grasped by the underlying fibroblast. Stem cell research could lead to cures for many diseases such as Parkinson's disease, Alzheimer's and diabetes, where a patient's cells are damaged or absent.
- Annie Cavanagh
Three lectures on the origin and properties of malaria or marsh miasma : with the best means of preventing its formation and of obviating its effects on the human constitution, when this cannot be done : delivered to the medical class of the University of Virginia
- Magill, Alfred T. 1804-1837.
Narrative of Mr. John Badcock's original experiments illustrative of the relations of small-pox, cow-pox and vaccination, carried-on during twenty years (1840-1860) on 200 cows and large numbers of human beings, whereby many renewed supplies of vaccine lymph were obtained and propagated extensively in the world
- Hodgson, G.F.