Stay away from the inner thigh entirely
MHC molecules (also called human leukocyte antigens (HLAs) in humans) are subdivided into class I molecules, which are found on all nucleated cells and class II molecules, which are found on specialized antigen-presenting cells (APCs) such as dendritic cells, macrophages, B cells, and selected activated endothelial or epithelial cells
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Official FDA / NIH Drug Monograph (Primary Source) Bacteriostatic Water for Injection, USP This official NIH-hosted drug monograph confirms: Bacteriostatic Water is a sterile, non-pyrogenic preparation Contains 0.9% benzyl alcohol as a bacteriostatic preservative Supplied in multi-dose containers Designed for repeated withdrawals to dilute or dissolve drugs for injection Multi-Dose Pharmaceutical Preparation Research Bacteriostatic Water for Injection (bWFI) in Parenteral Products This formulation research outlines that: bWFI is commonly used in parenteral pharmaceutical preparation Prepared using antimicrobial agents such as benzyl alcohol These preservatives are included to suppress the growth of microbial contaminants Antimicrobial Preservatives in Peptide Formulations Antimicrobial Preservatives for Protein and Peptide Formulations This review discusses: The necessity of antimicrobial preservatives Compatibility of preservatives with peptide compounds Use of benzyl alcohol in multi-dose biologic formulations Stability considerations in peptide reconstitution systems Highly relevant for: Lyophilised peptide storage Multi-withdrawal vial integrity Laboratory reconstitution environments For research purposes only
