Some sources report stability for up to 56 days, but 28 days is a safe guideline
The blotted membranes were blocked with 5% non-fat dry milk (w/v) in Tris-buffered saline with 0.1% Tween-20 (TBS-T) for 1 h at room temperature and then incubated with the following primary antibodies overnight at 4C: anti-Smad2 (1:1,000 dilution, Cell Signaling Technology), anti-phospho-Smad2 (1:1,000 dilution, Cell Signaling Technology), anti-Smad3 (1:1,000 dilution, Cell Signaling Technology), anti-phospho-Smad3 (1:1,000 dilution, Cell Signaling Technology), anti-TGF-1 (1:1000 dilution, Abcam), anti-IGF-1 (1:500 dilution, Abcam), TIMP-1 (1:500 dilution, Santa Cruz), MMP-9 (1:1000 dilution, R&D), fibronectin (1:500 dilution, Santa Cruz), E-cadherin (1:2000 dilution, CST), vimentin (1:2000 dilution, CST), and -SMA (1:2000 dilution, CST)
bulgaricus CRL 864, and Streptococcus thermophilus CRL 807, produce both antioxidant enzymes CAT as well as SOD, and provide intrinsic immunomodulatory benefits in the GI tract 577,578
Researchers isolated a specific fragment and created a stable, synthetic version