In vivo antibodies are critical tools for studying disease mechanisms in animal models — from tumor immunotherapy and immune checkpoint blockade to autoimmune disease intervention and cell depletion studies. However, conventional hybridoma-derived antibodies often produce inconsistent results due to Fc heterogeneity, high endotoxin levels, and batch-to-batch variability. For background on monoclonal vs polyclonal antibody production differences, see our selection guide.
abinScience's InVivoMAb™ Plus series addresses these limitations with recombinant in vivo antibodies engineered for animal model research. The portfolio covers 400+ antibodies across immune checkpoints (PD-1/PD-L1, CTLA-4, LAG-3, TIM-3, TIGIT), cell depletion (CD4, CD8, NK1.1, Ly6G), cytokine neutralization (IFN-γ, IL-2, TNF-α), and T-cell activation (CD3, CD28, CD40).
| Feature | InVivoMAb™ Plus | Conventional Hybridoma |
|---|---|---|
| Immunogenicity | Low — reduced neutralizing Ab induction, prolonged in vivo half-life | Variable — Fc heterogeneity can trigger host immune response |
| Batch consistency | High — recombinant production from defined sequence | Variable — hybridoma genetic drift over passages |
| Purity | >98% | Typically 90–95% |
| Endotoxin level | ≤1 EU/mg (LAL-verified per lot) | Often 5–50 EU/mg without additional purification |
| Carrier/preservatives | None — carrier-free, preservative-free, pathogen-free | May contain BSA, sodium azide, or other stabilizers |
| Cross-platform use | Compatible with ELISA, flow cytometry, and in vivo dosing | May require buffer exchange for in vitro applications |
The abinScience team conducted in vivo anti-tumor efficacy studies to validate the InVivoMAb™ Plus checkpoint antibodies in standard syngeneic mouse models.
| Parameter | Details |
|---|---|
| Antibodies tested | MS870209 (clone 29F.1A12) & MS870039 (clone RMP1-14) |
| Model | C57BL/6 mice, B16-F10 melanoma s.c. inoculation |
| Route | Intraperitoneal injection at predetermined doses |
| Result | Dose-dependent tumor growth suppression, significantly outperforming isotype control |
Fig 1. Tumor growth curves in C57BL/6 mice bearing B16-F10 melanoma treated with InVivoMAb™ Plus Anti-PD-1 antibodies (29F.1A12 and RMP1-14) vs. isotype control.
| Parameter | Details |
|---|---|
| Antibody tested | MV974029 (clone 10F.9G2) |
| Model | BALB/c mice, CT26 colon carcinoma s.c. inoculation |
| Result | Significant tumor growth suppression vs. isotype control |
Fig 2. Tumor growth curves in BALB/c mice bearing CT26 colon carcinoma treated with InVivoMAb™ Plus Anti-PD-L1 antibody (10F.9G2) vs. isotype control.
To confirm target specificity and binding capacity, the InVivoMAb™ Plus PD-1 and PD-L1 antibodies were tested by direct ELISA against their respective recombinant antigens.
Fig 3. Anti-PD-1 (29F.1A12) ELISA binding to mouse PD-1 antigen.
Fig 4. Anti-PD-L1 (10F.9G2) ELISA binding to mouse PD-L1 antigen.
| Research Area | Representative Clones | Application |
|---|---|---|
| Immune checkpoint blockade | Anti-PD-1 (29F.1A12, RMP1-14), Anti-PD-L1 (10F.9G2), Anti-CTLA-4 (9D9) | Tumor immunology, syngeneic tumor models |
| Cell depletion | Anti-CD4 (GK1.5), Anti-CD8a (2.43), Anti-NK1.1 (PK136), Anti-Ly6G (1A8) | Immune cell subset ablation in vivo |
| Cytokine neutralization | Anti-IFN-γ (XMG1.2), Anti-IL-2 (JES6-1A12) | Signaling pathway studies, autoimmune models |
| T-cell co-stimulation | Anti-CD40 (FGK45), Anti-4-1BB (3H3) | Immune activation, combination therapy studies |
| Fc-mediated function blocking | Anti-CD16/CD32 (2.4G2) | Fc receptor blocking before flow cytometry staining |
All antibodies below are carrier-free, preservative-free, endotoxin ≤1 EU/mg, purity >98%. Available in mg to gram quantities. For isotype control selection guidance, see our controls guide.
| Cat. No. | Product Name |
|---|---|
| MS870209 | InVivo Plus Anti-Mouse PD-1 Antibody (29F.1A12) |
| MS870039 | InVivo Plus Anti-Mouse PD-1 Antibody (RMP1-14) |
| MV974029 | InVivo Plus Anti-Mouse PD-L1 Antibody (10F.9G2) |
| MV974049 | InVivo Plus Anti-Mouse PD-L1 Antibody (10F.9G2) |
| MB651209 | InVivo Plus Anti-Mouse CTLA-4 Antibody (9D9) |
| MC336209 | InVivo Plus Anti-Mouse 4-1BB/CD137 Antibody (3H3) |
| MB782109 | InVivo Plus Anti-Mouse CD40 Antibody (FGK45) |
| MB823109 | InVivo Plus Anti-Mouse IFNAR1 Antibody (MAR1-5A3) |
| Cat. No. | Product Name |
|---|---|
| MF998109 | InVivo Plus Anti-Mouse CD4 Antibody (GK1.5) |
| MF815109 | InVivo Plus Anti-Mouse CD8a Antibody (2.43) |
| MC598109 | InVivo Plus Anti-Mouse NK1.1 Antibody (PK136) |
| MP500109 | InVivo Plus Anti-Mouse Ly6G Antibody (1A8) |
| MP370207 | Anti-Mouse TCR αβ Antibody (H57-597) |
| Cat. No. | Product Name |
|---|---|
| TF690109 | InVivo Plus Rabbit IgG Isotype Control (HyHEL-10) |
| RF533109 | InVivo Plus Rat IgG2a Isotype Control (SPE-7) |
| RF974109 | InVivo Plus Rat IgG2b Isotype Control (LTF-2) |
| MF974109 | InVivo Plus Mouse IgG2b Isotype Control (KLH) |
| MV080309 | InVivo Plus Mouse IgG1 Isotype Control (IS5-21F5) |
| MF974309 | InVivo Plus Mouse IgG2b Isotype Control (IS6-11E5.11) |
| MF974409 | InVivo Plus Mouse IgG2b Isotype Control (GC198) |
| MV080409 | InVivo Plus Mouse IgG1 Isotype Control (X40) |
| MV080609 | InVivo Plus Mouse IgG1 Isotype Control (Ci4) |
Prioritize products with low endotoxin (≤1 EU/mg), high purity (>95%), documented batch consistency, and no carrier proteins or preservatives. Confirm that the antibody clone has been validated in the same species and strain as your model. Check our endotoxin guide for recommended levels by application.
Yes. InVivoMAb™ Plus antibodies are compatible with ELISA, flow cytometry, and functional cell-based assays. The carrier-free, low-endotoxin formulation is suitable for both in vivo dosing and in vitro applications without buffer exchange.
Match the isotype and host species of your functional antibody. For example, if your anti-PD-L1 is rat IgG2b, use a rat IgG2b isotype control (e.g., LTF-2, RF974109) at the same dose and route. For more on control design, see our Isotype Controls vs FMO guide.
Standard sizes range from 100 µg to 5 mg. Bulk quantities (gram-scale) are available for long-term studies. Contact [email protected] for custom quotes on large orders.
Step-by-step protocol: In Vivo Checkpoint Antibody Administration in Mouse Tumor Models on protocols.io →
400+ In Vivo Antibodies — Ready to Ship
Immune checkpoint, cell depletion, cytokine neutralization, and isotype controls. Carrier-free, endotoxin ≤1 EU/mg, batch-consistent.
Browse InVivoMAb™ Plus →All products are for research use only. For technical support, contact [email protected].
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