Representative images illustrating TH+ neurons in the substantia nigra pars compacta (SNpc). MPTPtreated animals show loss of TH+ neurons relative to control animals treated with saline or saline plus clenbuterol. Scale bar, 100 mm. This material relates to a paper that appeared in the Sept. 1, 2017, issue of Science, published by AAAS. The paper, by S. Mittal at Harvard Medical School in Boston, Mass., and colleagues was titled, "β2-Adrenoreceptor is a regulator of the α-synuclein gene driving risk of Parkinson's disease."
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