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BioLink International is a biology technology company specialized in providing biomedical materials to its customers. Various HIV, HCV and Syphilis antigens (or epitopes) have been cloned, expressed and purified in our lab and can be used to development diagnostic kits for HIV, HCV and Syphilis.

Our Recombinant HIV Antigens are suitable for an Enzyme Immune Assay (EIA) or the Enzyme_linked Immunosorbent Assay (ELISA) kits testing, Our Recombinant HIV Antigens can also be used in Radioimmunoprecipitation Assay (RIPA) Test, a confirmatory test when antibody levels are very low or difficult to detect or when Western blot test results are uncertain.

Our currently provide the following Recombinant Antigens:

Recombinant HIV Antigens:

Recombinant Multi-epitope Chimeric HIV antigen-1 (containing: gp41, "O"-IDR, gp36) **
Our innovative product contains a lengthened HIV-1 gp41, O IDR(immune-domain region), and HIV-2 gp36 fragment. Only one such chimera antigen will achieve a satisfactory level of sensitivity and specificity in HIV EIA kit testing.

Other single HIV antigens including:
Recombinant HIV-1gp-41
Recombinant HIV-1gp-120(epitope)
Recombinant HIV-1p31
Recombinant HIV-1"O" group consensus IDR *
Recombinant HIV-2 gp36 (IDR)


Recombinant HCV Antigens

Recombinant Multi-epitopes Chimeric HCV antigen (containing: Core, NS3, NS4) **
contains a lengthened Core, NS3, and NS4 fragment. Only one such chimera antigen will achieve a satisfactory level of sensitivity and specificity in HCV EIA kit testing.

Other single HCV antigens including:
Recombinant HCV-Core antigens
Recombinant HCV-NS3 antigens
Recombinant HCV-NS4 antigens(epitopes)
Recombinant HCV-NS5 antigens(epitopes) *


Recombinant Treponema pallidum Antigens for Syphilis:

Recombinant Tp-chimeric protein (containing: TpN 15, TpN17, TpN44.5 & TpN47) **
contains a lengthened TpN 15, TpN17, TpN44.5 & TpN47 fragment. Only one such chimera antigen will achieve a satisfactory level of sensitivity and specificity in Syphilis EIA kit testing.

Other single proteins including:
Recombinant TpN 15 protein (IDR)
Recombinant TpN 17 protein
Recombinant TpN 44.5 protein (IDR)
Recombinant TpN 47 protein (IDR)


Recombinant Tuberculosis Antigen

Recombinant Tuberculosis Antigen (containing: containing: 38kDa, ESAT-6, CFP-10) **
contains a lengthened containing: 38kDa, ESAT-6, CFP-10 fragment. Gold labeled method, ELISA, Western Blots. Recommend using in sandwich and indirect method for Colloidal gold, indirect method for ELISA to detect IgG


Recombinant Zika Antigen

Recombinant Zika NS1 Antigen **
Suitable for use in ELISA test. Recommended concentration is 2.5ug/ml for IgG.


We satisfy our customers with cost-effective and reliable products at a very competitive price. Our goal is to be our customers' most reliable and valued partner