A fusion tag, called 3 × Flag-tag and consisting of eight amino acids (Met-Asp-Tyr-Lys-Asp-His-Asp-Gly-Asp-Tyr-Lys-Asp-His-Asp-Ile- Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys) including an enterokinase-cleavage site, was specifically designed for immunoaffinity chromatography.

A fusion tag, called DYKDDDDK and consisting of eight amino acids (Asp-Tyr-Lys-Asp-Asp-Asp-Asp-Lys) including an enterokinase-cleavage site, was specifically designed for immunoaffinity chromatography.

Y-tec無血清細胞凍存液（Y-Tec Serum-Free Cell Freezing Medium），通用于各種動物細胞株（腫瘤細胞和常規細胞），凍存細胞可在-80℃長期保存（>5年）。Y-tec無血清細胞凍存液配方成分明确，不含動物來源性蛋白，不含血清，可減少各類細菌、病毒和支原體等污染，保證凍存細胞的安全。

Y-Tec快速轉膜液（20×）(Y-Tec Fast Transfer Buffer)是一款全程免冰浴，常溫狀态下即可完成傳統濕轉的高效轉膜液，該産品能高效快速地将PAGE膠上的蛋白轉移到PVDF或NC膜上，小于180KD蛋白僅需10-35分鍾即可完成。

The DYKDDDDK peptide has been used extensively as a general epitope tag in expression vectors. This peptide can be expressed and detected with the protein of interest as an amino-terminal or carboxy-terminal fusion.