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Description
In April 2026, the FDA announced that its Pharmacy Compounding Advisory Committee (PCAC) will meet on July 23 and 24, 2026, to discuss several peptide-related bulk drug substances for possible inclusion on the 503A Bulks List

Exposure to light can trigger a chain of biochemical events that continue to affect a protein even after the light source is turned off

O-GlcNAcylation and phosphorylation target serine or threonine residues, leading to a dynamic interplay as they compete for the same or adjacent sites (Figure 1)
10.1097/00004647-200110000-00012 J
