Stem cell image of the week: Do they or don’t they? The debate on new nerve cell growth in adult brain rages on. For the longest time, it was simply a given among scientists that once you reach adulthood, your brain’s neuron-making days were over. Then, over the past several decades, evidence emerged that the adult … Continue reading Stem Cell Roundup: No nerve cells for you, old man; stem cells take out the trash; clues to better tattoo removal