Biointron - Antibody Discovery, Antibody Production, Stable cell line, Protein Expression, CRO

Recombinant Antibody Expression

Delivery in
2 weeks

From Gene Sequence to Purified Antibody

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Accelerating
Your Antibody Discovery

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AbDrop™: Discovery Fully Human Antibodies

Fully Human
Antibody Discovery

Rapid Generation of High-Quality, Fully Human Antibodies: Increased Diversity, Validated Candidates in Just 3 Months!

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Affinity
Maturation

No-bias Site Saturation Mutagenesis in CDR Region

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VHH Antibody
Discovery

Over 100 Projects Delivered Every Year

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Bispecific Antibody
Production

Any format BsAb can be customized

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About Us

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Antibodies Delivered Annually

Why you should choose us

Pioneering Antibody Solutions

We specialize in antibody expression, discovery, and optimization with internationally recognized automated production standards - offering superior services at market- competitive rates with efficient turnaround times.
Unique Cell Line Commercialization

We possess exclusive re-licensing rights for the commercialization of the CHO-K1BN cell line licensed from ECACC.
Global Collaborative Excellence

Our partnerships with 2,500+ global biotech and pharmaceutical entities, coupled with our collaborative advancements in international clinical stages, solidify our esteemed position in the industry.
Trust and Exclusive Ownership

We commit to complete confidentiality - preserving the exclusive ownership rights of the antibodies we produce for our clients.

Engage with Biointron, your dependable partner for efficient, affordable, and top-tier custom antibody solutions.

About Biointron

Founded in 2012, and certified to ISO 9001:2015, Biointron is a CRO (Contract research organization) specializing in antibody discovery, expression, and optimization services for biotech and pharmaceutical companies.

Biointron is a leading high-throughput recombinant antibody/protein expression and discovery service provider. From gene sequence to purified antibodies, it just takes 2 weeks. Biointron has delivered tens of thousands of recombinant antibodies for 2,500+ biotech and pharma companies all over the world.

Client Voices: Biointron Success Stories

Learn from our partners and clients about the transformative impact of Biointron's expertise.

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"We evaluated the 6 proteins you produced for us and we were quite pleased by the results. our internal assessments of the molecules are very encouraging so we would like to potentially expand this further."

— AstraZeneca

"We have tested both batches of the antibodies you sent us. They're active and give comparable results with little batch to batch variation."

— AbbVie

"Excellent.The protein quality and activity was high and up to our standards, we appreciate the help and the work.The short timeline for the production is the main factor Biointron differs from other CROs."

— Moderna

"Great working with you, I've been highly impressed and recommending you to many in my network."

— Sanofi

"I just wanted to give you a quick heads-up regarding the expression we conducted at Biointron. Essentially, everything went well and was super fast, so we are all very much satisfied."

— Merck KGaA

"BioIntron was the best from the three: it was the only company that was able to express all the sequences and the yield for those proteins that the other two companies also could express was, generally, higher."

— ImmuVia, LLC

Our Latest News and Stories

Biointron Insights: Antibody Industry Report (Q3 2025 Insights, Trends & Analysis)

Biointron’s Q3 2025 antibody industry report aims to explore the events and trends of the biopharmaceutical industry in July, August, and September. This quarter, 2 novel monoclonal antibody drugs have been approved by at least one regulatory agency around the world: both from China.

Oct 01, 2025

VHH Library Generation: Immunized, Naïve, and Synthetic Nanobody Libraries

A VHH library is a collection of variable domains of heavy-chain antibodies (VHHs), also known as nanobodies or single-domain antibodies. These domains are derived from the heavy-chain-only antibodies (HCAbs) naturally produced by camelids, including camels, alpacas, and llamas.

Nov 07, 2025

Biointron Launches Quarterly Travel Grant to Support Early-Career Antibody Researchers

Biointron is proud to announce the launch of the Biointron Quarterly Travel Grant Program, a new initiative designed to empower early-career scientists in the antibody field to share their research with the world. The program reflects our ongoing commitment to accelerating discovery and supporting the next generation of innovators driving progress in antibody science.

Nov 06, 2025

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Biointron Awarded EcoVadis Bronze Medal for Sustainability Excellence

Recognition places Biointron among the top 35% of global performers in sustainability management. Biointron Biological Inc. (Group), has been awarded the EcoVadis Bronze Medal for our commitment to sustainability.

Oct 23, 2025

Biointron Reaches 2,500+ Customers Worldwide, Strengthening its Leadership in Antibody Services

Biointron, a leading contract research organization (CRO) specializing in antibody discovery, optimization, and expression services, is proud to announce more than 2,500 biotech and pharmaceutical customers worldwide. This achievement underscores our trusted role in accelerating antibody research an

Aug 11, 2025

Biointron Launches a Fast Antibody Discovery Platform

Introducing a new High-throughput Fully Humanized Antibody Discovery Platform with Biointron AbDrop & Cyagen HUGO-Ab! This novel approach combines microfluidic technology for single B cell antibody discovery and fully human antibody mice for a safer and more efficient approach for fully human antibody discovery, ready in as quickly as 3 months.

Mar 07, 2025

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