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One snag: The FDA is making peptides harder to access Peptide fans get their shots at clinics and med spas or, for less money, online
The standard research protocol involves 300-500mcg daily
Vendor-sourced product without third-party COA verification can contain degraded peptide, incorrect sequences, or contaminants
10.3322/caac.21660 42 TakahashiN.SaitoD.HasegawaS.YamasakiM.ImaiM
Studies have shown that tamoxifen resistance is associated with IGFBP-1 accumulation and that the overexpression of IGFBP-1 promotes tamoxifen resistance in breast cancer cells by activating the ERK pathway, which can be reversed by knocking down IGFBP-1 (134)
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