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. 2015 Sep 16;10(9):e0138425. doi: 10.1371/journal.pone.0138425

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Fig 5 — (A) Acid activated protein lysates from human muscle biopsy samples were assessed for TGF-β1 by ELISA and compared to a standard curve. Data points are the mean ± SE. Samples include ALS (n = 12); neuropathy (n = 7); myopathy (n = 8); normal (n = 4). *, p < 0.05. (B) Confocal photomicrographs of ALS and control muscle samples labeled with an anti-TGF-β1 antibody. Bx, biopsy specimen; Aut, autopsy specimen; Ctl, normal biopsy. Size marker = 50 microns.