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Assessment of epididymal sperm morphology and viability The eosin-nigrosin staining method was used according to the World Health Organization protocol to evaluate morphology and vitality, with abnormal sperm forms (e.g., residual cytoplasm) classified as defects [38]
Detailed biophysical studies (X-ray crystallography, EPR, NMR) elucidated that in GHK-Cu, the Cu(II) ion is coordinated by the imidazole side chain nitrogen of histidine, the alpha-amino nitrogen of glycine, and the deprotonated amide nitrogen of the glycine-histidine bond
Refrigeration at 4 C (39 F) extends shelf stability and is recommended for long-term storage
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Mild Swelling Lasting a Few Days : A temporary fluid buildup and tissue reaction that gradually disappears as the body adjusts
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