Quartett was founded in 1986 in Berlin, Germany. As a family-operated biotechnology company, it has long been dedicated to cancer prevention and treatment while advancing innovations in tumor diagnostic technologies. Quartett focuses on two core business areas: the production of monoclonal antibodies for anatomical pathology and immunohistochemistry (IHC), and the supply of synthetic peptides for the pharmaceutical industry and research institutions.
Vicbio Biotechnology Co., Ltd. provides the full range of Quartett products.
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This platform overcomes the limitations of traditional mouse-derived antibodies. Compared with the murine immune system, the rabbit immune system offers significant advantages, including the ability to recognize much smaller epitopes (≤5 amino acids) and to generate highly specific antibodies with affinities reaching 10⁻¹² M. These properties enable the diagnostic reagents developed by Quartett to demonstrate outstanding performance in cancer detection, such as a PD-L1 detection sensitivity of 92.7%. Currently, only three companies worldwide possess the capability to industrially produce this technology.
Quartett specializes in the production of custom peptides with HPLC purity greater than 95%, including protease inhibitors and immunogenic peptides used for antibody production. This platform has also directly contributed to the breakthrough development of the rabbit recombinant antibody technology, forming a complete technological pipeline from synthetic peptide generation to high-value diagnostic antibody development.
All reagents are optimized for compatibility with fully automated staining platforms (such as Roche Ventana and Leica BOND) as well as manual staining workflows.
| Product Name | Cat. # | Size | Application | Host |
| CD31 (QR034) | C-C031/P-C031 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| ERG (QR040) | C-E003/P-E003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Arginase-1 (QR083) | C-A003/P-A003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cadherin 17(QR098) | C-C036/P-C036 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD117 (QR012) | C-C003/P-C003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD171/L1CAM (QR039) | C-C025/P-C025 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CDX2 (QR045) | C-C016/P-C016 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 20 (Ks20.8) | C-C005/P-C005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Mouse |
| Glutamine synthetase (QR090) | C-G003/P-G003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Glypican 3 (QR103) | C-G005/P-G005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| HSP70 (QR087) | C-H002/P-H002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| MLH1 (QM003) | C-M001/P-M001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Mouse |
| MSH2 (QR010) | C-M004/P-M004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| MSH6 (QR011) | C-M005/P-M005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PMS2 (QR009) | C-P005/P-P005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| SATB2 (QR023) | C-S002/P-S002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| SMAD4 (QR029) | C-S007/P-S007 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| BAP1 (QR119) | C-B005/P-B005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 14 (QR057) | C-C033/P-C033 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 5 (QR027) | C-C008/P-C008 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 5/14 (QR027/QR057) | C-C035/P-C035 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 5/6 (QR027/QR028) | C-C017/P-C017 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 5/6/ERG (QR027/QR028/ QR040) | C-C024 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 6 (QR028) | C-C009/P-C009 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 7 (QR049) | C-C014/P-C014 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin 8 (QR112) | C-C040/P-C040 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cytokeratin pan (MNF-116) | C-C034/P-C034 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Mouse |
| EpCAM (QR107) | C-E006/P-E006 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| GLUT1 (QR082) | C-G004/P-G004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Inhibin alpha (QR088) | C-I004/P-I004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| NUT (QR043) | C-N001/P-N001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| p21 (QR085) | C-P017/P-P017 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| p53 (QR025) | C-P011/P-P011 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| p63 (QR007) | C-P004/P-P004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| pan-TRK (QR008) | C-T004/P-T004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PAX8 (QR016) | C-P008/P-P008 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PD-1 (QR002) | C-P002/P-P002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PD-L1 (QR001) | C-P001/P-P001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PTEN (QR042) | C-P015/P-P015 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| WT1 (QR030) | C-W001/P-W001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| E-cadherin (QR035) | C-E004/P-E004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Estrogen receptor (QR013) | C-E001/P-E001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| GATA3 (QR018) | C-G001/P-G001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Her2/New (QR003) | C-H001/P-H001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Ki-67 (QR015) | C-K001/P-K001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Mammaglobin (QR080) | C-M006/P-M006 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PR (QR014) | C-P006/P-P006 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| TRPS1 (QR099) | C-T003/P-T003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD56 (QR044) | C-C022/P-C022 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Chromogranin A (QR096) | C-C020/P-C020 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| p16 (QR019) | C-P010/P-P010 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PLAP (QR084) | C-P021/P-P021 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD56 (QR044) | C-C022/P-C022 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Chromogranin A (QR096) | C-C020/P-C020 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| GFAP (QR066) | C-G002/P-G002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| IDH1 R132H (QM002) | C-I001/P-I001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Mouse |
| NSE (QR104) | C-N005/P-N005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Olig2 (QR071) | C-O001/P-O001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Synaptophysin (QR054) | C-S005/P-S005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Helicobacter pylori (QR091) | C-H003/P-H003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Calretinin (QR059) | C-C023/P-C023 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| EGFR (QR078) | C-E005/P-E005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Napsin A (QR058) | C-N002/P-N002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| p40 (QR020) | C-P007/P-P007 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| TTF1 (QR046) | C-T001/P-T001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| AMACR (QR108) | C-A004/P-A004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| NKX3.1 (QR055) | C-N003/P-N003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PAX2 (QR060) | C-P019/P-P019 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PIN cocktail AMACR/p63 (QR108 & QM006) | C-P012/P-P012 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | AMACR: Rabbit, p63: Mouse |
| PPE (QR038) | C-P014/P-P014 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PSMA (QR079) | C-P022/P-P022 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| SALL4 (QR024) | C-S004/P-S004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| C4d (QR053) | C-C001/P-C001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Beta-catenin (QR095) | C-B004/P-B004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Caldesmon (QR063) | C-C029/P-C029 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD99 (QR067) | C-C027/P-C027 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Desmin (QR026) | C-D001/P-D001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Myosin heavy chain 11 (QR064) | C-M010/P-M010 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| NKX2.2 (QR077) | C-N004/P-N004 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| STAT6 (QR041) | C-S006/P-S006 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Vimentin (QR097) | C-V001/P-V001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| ALK (QR017) | C-A001/P-A001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Bcl2 (QR062) | C-B001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Bcl6 (QR047) | C-B002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| BOB.1 (QR072) | C-B003/P-B003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| c-Myc (QR061) | C-C018/P-C018 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD10 (QR021) | C-C006/P-C006 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD138 (QR102) | C-C038/P-C038 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD20 (QR094) | C-C015/P-C015 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD21 (QR076) | C-C030/P-C030 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD23 (QR036) | C-C013/P-C013 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD30 (QR109) | C-C044/P-C044 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD34(QR093) | C-C019/P-C019 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD3e (QR004) | C-C002/P-C002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD4 (QR032) | C-C012/P-C012 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD45/LCA (QR106) | C-C037/P-C037 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD5 (QR111) | C-C039/P-C039 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD71 (QR073) | C-C032/P-C032 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD79a (QR033) | C-C011/P-C011 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| CD8 (QR068) | C-C026/P-C026 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Cyclin D1 (QR022) | C-C007/P-C007 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| IgA (QR050) | C-I003/P-I003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| IgG4 (QR092) | C-I005/P-I005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| IRTA1 (QM005) | C-I002 | 0.1 ml; 0.5 ml | IHC (FFPE) | Mouse |
| Kappa light chain (QR051) | C-K002/P-K002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Lambda light chain (QR052) | C-L001/P-L001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| MPO (QR101) | C-M011/P-M011 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| MUM1 (QR075) | C-M007/P-M007 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PAX5 (QR056) | C-P020/P-P020 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| TdT (QR037) | C-T002/P-T002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Factor XIIIa(QR086) | C-F001/P-F001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Langerin(QR065) | C-L002/P-L002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Melan A(A103) | C-M002/P-M002 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Melanoma (HMB-45) | C-M003/P-M003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Mouse |
| Podoplanin (QR048) | C-P016/P-P016 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| PRAME (QR005) | C-P003/P-P003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| S100B (QR031) | C-S003/P-S003 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| SOX10 (QR006) | C-S001/P-S001 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Rabbit |
| Tyrosinase (T311) | C-T005/P-T005 | 0.1 ml; 0.5 ml; 1 ml; 3 ml; 7 ml; 15 ml | IHC (FFPE) | Mouse |
