FAQs

A practical guide to understanding and verifying antibody specificity. Covers common causes of cross-reactivity, the five pillars of antibody validation, species reactivity interpretation, and a step-by-step checklist for confirming antibody performance in your specific experimental system.

Complete pseudovirus neutralization protocol (Day 0–3) and receptor-blocking ELISA (sVNT) with plate layout, 4PL curve fitting, and troubleshooting for 7 common problems.

An overview of recombinant antibodies and why they are replacing traditional hybridoma-derived reagents in research. Covers production methods, advantages for reproducibility and engineering, format flexibility, and when to choose recombinant over hybridoma-derived antibodies.

An introduction to VHH nanobodies (single-domain antibodies). Covers their origin from camelid heavy-chain antibodies, structural advantages over conventional IgG, key research applications, and how nanobodies compare to traditional antibodies for imaging, intracellular targeting, and therapeutic development.

An overview of cytokines and chemokines for researchers. Covers major families (interleukins, TNF superfamily, interferons, chemokines, growth factors), their roles in immune signaling, and the research tools used to study them including recombinant proteins, antibodies, and ELISA kits.

A practical guide to blocking and permeabilization for immunoassays. Covers blocking agents (BSA, normal serum, casein, commercial blockers), permeabilization methods (Triton X-100, saponin, methanol, digitonin), application-specific recommendations, and troubleshooting non-specific background.

An introduction to surface plasmon resonance (SPR) and biolayer interferometry (BLI) for measuring antibody binding kinetics. Covers how each technology works, key parameters (KD, kon, koff), experimental design, and when to use SPR vs. BLI in antibody development and quality control.

An overview of stable cell line development for recombinant protein and antibody production. Covers the workflow from gene construct design through transfection, selection, single-cell cloning, and scale-up, with practical tips on host cell selection, expression vector design, and screening strategies.

A comprehensive hub page for oncology research reagents. Covers immune checkpoint antibodies, ADC targets, tumor microenvironment markers, cancer signaling pathway proteins, and research biosimilar reference antibodies across 20+ cancer types.

Complete guide to immune checkpoint targets for cancer research. Covers PD-1/PD-L1, CTLA-4, LAG-3, TIGIT, TIM-3, CD47, B7-H3 — mechanisms, approved therapies, and 1,170+ research reagents including antibodies, proteins, and biosimilars at abinScience.