While prokaryotic cells do not have membrane-bound structures, they do have distinct cellular regions (Figure 1). In prokaryotic cells, DNA bundles together in a region called the nucleoid. Primitive ...
Pop quiz: Stem cells can be used to 1. fight cancer, 2. grow a new kidney, 3. erase wrinkles, or 4. repad creaky knees. Can’t settle on one answer? Not surprising—the mini powerhouses have grabbed ...
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