Thymalin

Thymalin is a standardized bovine thymus polypeptide extract studied for T-cell maturation support and immune reconstitution. Part of the Khavinson bioregulator series for thymic involution and aging immunology research.

Thymalin is a purified polypeptide preparation derived from bovine thymus tissue through controlled enzymatic hydrolysis, yielding a standardized complex of low-molecular-weight peptides (predominantly under 10 kDa). The thymus gland is the primary site of T-lymphocyte development, where immature thymocytes undergo positive and negative selection to produce a diverse, self-tolerant T-cell repertoire. With aging, the thymus undergoes progressive involution — shrinking and being replaced by adipose tissue — resulting in declining thymic output (reduced recent thymic emigrants and naïve T cells), a phenomenon that contributes significantly to age-related immune dysfunction (immunosenescence).

Research applications for Thymalin center on thymic biology, T-cell homeostasis, and immune aging. Published studies from the Khavinson laboratory have investigated Thymalin in models of age-related thymic involution, immunoreconstitution following immune depletion, CD4/CD8 T-cell ratio normalization, natural killer cell cytotoxicity modulation, and cytokine balance restoration. The bioregulatory framework proposes that thymic peptides function as endogenous homeostatic signals that maintain tissue-specific function — in this case, thymic epithelial cell support and thymocyte development.

Thymalin has been studied alongside other thymic peptides (Thymosin Alpha-1, Thymosin Beta-4) to compare mechanisms and efficacy in immune restoration paradigms. While Thymosin Alpha-1 is a single defined 28-amino acid peptide, Thymalin represents a complex multi-peptide preparation, potentially providing broader coverage of thymic signaling pathways.

Supplied as a lyophilized powder. Store at 2-8°C. For immunology and thymic biology research only.

Product Specifications

Certificate of Analysis

Every batch ships with a Janoshik-verified COA covering HPLC purity, mass spectrometry confirmation, and batch traceability.

Shipping & Lead Times

• US warehouse: ships within 1–2 business days · estimated 3–5 day delivery
• HK warehouse: ships within 2–3 business days · estimated 7–14 day international delivery
• Carriers: DHL Express, FedEx International, UPS Worldwide
• Discreet outer packaging — no peptide branding visible
• Tracking number emailed on dispatch

Lost or Detained Packages

If your shipment is lost or detained by customs, we will reship once free of charge. Contact us with your order number.