What Cell Marque does

Cell Marque Tissue Diagnostics is a Rocklin, California-based specialty diagnostic reagent manufacturer founded in 1994 by Nora Lacey, specializing in immunohistochemistry (IHC) primary antibodies and ancillary reagents for clinical pathology laboratories. The company offers an extensive portfolio of over 40,000 IHC products spanning 12+ pathology specialties (anatomic, breast & gynecological, cytopathology, dermatopathology, GI, GU, head & neck, hematopathology, neuropathology, pediatric, pulmonary, and soft tissue), including rabbit monoclonals, mouse monoclonals, and polyclonals. Sub-brands include Cell Marque Universal, the co-branded Cell Marque + RabMAb Technology from Abcam line, Epitomics Portfolio, and Cell Marque Purified Antibodies for spatial biology workflows. The supporting product ecosystem includes proprietary Trilogy Pretreatment Solution (a three-in-one deparaffinization/rehydration/antigen retrieval reagent), HiDef Detection HRP and Alk Phos Polymer Systems, DAB and Permanent Red chromogens, HistoCyte cell line controls, and the Midas III-Plus automated stainer, with ZytoVision FISH probes distributed through partnership.

Since 2015-2017, Cell Marque has operated as a wholly-owned subsidiary within MilliporeSigma, the U.S. life science business of Merck KGaA, Darmstadt, Germany—following the EMD Millipore/Sigma-Aldrich merger and Merck's subsequent $17 billion Sigma-Aldrich acquisition. The company sells primarily through quote-based, one-time unit pricing (concentrate and predilute formats ranging from 0.1mL to 25mL), distributed via the global Sigma-Aldrich e-commerce catalog, dedicated enterprise account managers for major accounts, and international distributor networks. The customer base is dominated by hospital pathology laboratories, independent and reference clinical labs, and academic research institutions requiring IVD-validated and RUO-grade antibodies for cancer diagnostics, tumor subtyping, and biomarker research. The company holds IVDR (EU 2017/746) compliance for European market access and US-IVD validation for clinical diagnostics.

Cell Marque operates with 101-250 employees across sales, technical consulting, and product development functions, generating revenue that is not separately disclosed within Merck KGaA's reporting. The go-to-market motion combines enterprise field sales with strong event-driven engagement at major pathology conferences (NSH, USCAP), continuing education webinars (The Diagnostic Cut series), and rich educational content (HistoHero comics, IHC Memory Game, troubleshooting guides). Strategic emphasis is on workflow stickiness through bundled reagent-plus-equipment-plus-detection ecosystems and continuous portfolio expansion into emerging diagnostic niches such as spatial biology, molecular diagnostics, and biomarker-guided oncology.

Name

Cell Marque

Legal name

Cell Marque Tissue Diagnostics

Website

http://www.cellmarque.com/

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

101–250 employees

Short description

Cell Marque Tissue Diagnostics, founded 1994 and a MilliporeSigma (Merck KGaA) subsidiary, manufactures over 40,000 immunohistochemistry (IHC) primary antibodies, detection systems, and pretreatment reagents for clinical pathology laboratories performing cancer diagnostics, tumor subtyping, and biomarker research worldwide.

Ownership category

akta.pro rank

Product category

Tissue Diagnostics Reagents

NAICS

In-Vitro Diagnostic Substance Manufacturing (325413)

SIC

In Vitro & In Vivo Diagnostic Substances (2835)

akta.pro primary industry

Cytology & Histopathology Diagnostics (IHC, ISH, tissue-based assays) (HLAAALAI)

akta.pro secondary industries

IVD Reagents, Assay Kits & Consumables (Non-instrument) (HLAHAAAM), Reagents, Chemicals & Assay Kits (Buffers, Antibodies, ELISA, Enzymes) (HLAGAIAI)

Keywords

• IHC primary antibodies
• Tissue diagnostics reagents
• Clinical pathology products
• Antibody detection kits
• Histology lab supplies

Headquarters

HQ city

Rocklin

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. IHC Antibodies and Ancillaries: One-time product sales of primary antibodies, detection kits, control slides, and reagents for immunohistochemistry testing. Products sold in various sizes (0.1mL, 0.5mL, 1.0mL, 7.0mL concentrates and predilute formats) for IVD and RUO applications.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Cell Marque manufactures and supplies primary antibodies, detection systems, pretreatment reagents, control slides, and ancillary products for immunohistochemistry (IHC) testing in clinical pathology laboratories. The portfolio includes IVD-validated Rabbit Monoclonals, Mouse Monoclonals, and Polyclonals, alongside the proprietary Trilogy Pretreatment Solution, HiDef Detection HRP/Alk Phos Polymer Systems, control slides, automated stainers, and FISH probes for cancer diagnostics. Products are sold to hospital pathology labs, reference laboratories, and academic research institutions under the Cell Marque, Cell Marque + RabMAb, Epitomics, Midas, HistoCyte, and ZytoVision brands.

Product overview

Cell Marque Tissue Diagnostics, a Sigma-Aldrich company (MilliporeSigma), provides an extensive portfolio of over 40,000 IHC products focused on in vitro diagnostics (IVD) for histopathology laboratories. The core offering centers on Primary Antibodies including Rabbit Monoclonals, Mouse Monoclonals, and Polyclonals across multiple specialty pathology areas (Anatomic, Breast & Gynecological, Cytopathology, Dermatopathology, GI, GU, Head & Neck, Hematopathology, Neuropathology, Pediatric, Pulmonary, and Soft Tissue Pathology). The product ecosystem includes sub-brands such as Cell Marque™ Universal, Cell Marque™ + RabMAb® Technology from Abcam, Epitomics Portfolio, and Cell Marque™ Purified Antibodies for spatial biology workflows. Supporting products include Detection Systems (DAB Substrate Kit, HiDef Detection HRP/Alk Phos Polymer Systems, Permanent Red Chromogen Kit), Reagents (Trilogy Pretreatment Solution), Control Slides (HistoCyte Control Material), Lab Equipment (Midas® III-Plus Automated Stainer), Sigma-Aldrich® Stains/Dyes, and ZytoVision® FISH probes. Additional offerings encompass Custom Antibody Services, educational resources, webinars, troubleshooting guides, and interactive media tools.

Differentiator

Problem solved

Functional benefit

Brands

• Cell Marque™ Universal: Universal IHC antibody products
• Cell Marque™ + RabMAb® Technology from Abcam
• Cell Marque™ Purified Antibodies
• Epitomics Portfolio
• HistoCyte Control Material
• Midas® III-Plus Automated Stainer
• ZytoVision® Probes & Reagents for FISH

Products and services

• Primary Antibodies (Rabbit Monoclonals, Mouse Monoclonals, Polyclonals) Extensive portfolio of high-quality IVD-validated immunohistochemical (IHC) antibodies including Rabbit Monoclonals, Mouse Monoclonals, and Polyclonals for clinical pathology diagnostics. Available in concentrate (0.1mL, 0.5mL, 1.0mL, 7.0mL) and predilute ready-to-use (1.0mL, 7.0mL) formats across specialty areas including Anatomic, Breast & Gynecological, Cytopathology, Dermatopathology, GI, GU, Head & Neck, Hematopathology, Neuropathology, Pediatric, Pulmonary, and Soft Tissue Pathology.
• Cell Marque Universal Core antibody brand from Cell Marque featuring a comprehensive range of IHC primary antibodies for diagnostic pathology applications across multiple pathology specialties.
• Cell Marque + RabMAb Technology from Abcam Co-branded antibody portfolio utilizing Abcam's RabMAb rabbit monoclonal technology, offering higher sensitivity and specificity than traditional mouse monoclonals or rabbit polyclonals for clinical IHC diagnostics.
• Cell Marque Purified Antibodies High-quality purified antibodies designed for customizable, multiplexed spatial biology workflows in research and diagnostics applications.
• Epitomics Portfolio Antibody products from the Epitomics brand distributed by Cell Marque, including novel antibodies and new clones to established markers for IHC diagnostics.
• HiDef Detection HRP Polymer System Horseradish peroxidase (HRP) polymer detection system providing highly sensitive immunohistochemical detection of antibody-antigen complexes in tissue specimens.
• HiDef Detection Alk Phos Polymer System Alkaline phosphatase polymer detection system for sensitive immunohistochemical detection applications, providing flexibility in target visualization.
• DAB Substrate Kit 3,3'-Diaminobenzidine (DAB) substrate kit for HRP-based immunohistochemical detection, producing a brown precipitate for visualization of target antigens.
• Permanent Red Chromogen Kit Alkaline phosphatase-catalyzed chromogen kit producing a bright red precipitate insoluble in alcohol and organic solvents, enabling visualization of target antigens under light microscopy.
• Trilogy Pretreatment Solution All-in-one pretreatment solution for IHC assays on formalin-fixed, paraffin-embedded (FFPE) tissue sections, combining deparaffinizing, rehydrating, and antigen retrieval in a single solution for standardized protocols.
• HistoCyte Control Material Cell line controls including slides with dynamic range of estrogen receptor expression for use as same-slide controls in immunohistochemistry quality assurance.
• Control Slides Positive control slides for quality assurance in IHC staining, including 5 paraffin-embedded tissue sections per pack.
• Midas III-Plus Automated Stainer Automated IHC/ISH staining platform for high-throughput laboratory processing of tissue samples, supporting routine and special staining workflows.
• Sigma-Aldrich Stains, Dyes, & Universal Reagents Routine and special stains, dyes, and universal reagents for histology and histopathology workflows.
• ZytoVision Probes & Reagents for FISH Fluorescence in situ hybridization (FISH) probes and reagents for molecular diagnostics and research applications, expanding the portfolio into molecular diagnostics.
• Lab Equipment Laboratory equipment for histology and IHC workflows including automated stainers and supporting instrumentation.
• Custom Antibody Services Custom antibody development services for creating tailored antibodies to meet specific diagnostic or research needs.

Quantifiable outcome

• Trilogy pretreatment can be completed in 15-35 minutes vs. longer traditional methods
• +1 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core and minor.

• MilliporeSigmacoreOthers · 23 February 2017Cell Marque is now part of MilliporeSigma, the U.S. life science business of Merck KGaA, Darmstadt, Germany. This followed the completion of Merck KGaA's acquisition of Sigma-Aldrich in 2015, merging EMD Millipore and Sigma-Aldrich. The combined business provides access to over 300,000 products and enhanced distribution capabilities.
• AbcamcoreTechnology or IntegrationStrategic technology partnership where Cell Marque distributes co-branded 'Cell Marque™ + RabMAb® Technology from Abcam' products. Abcam provides their proprietary RabMAb (Rabbit Monoclonal) technology, which Cell Marque incorporates into their IHC antibody portfolio for enhanced sensitivity and specificity compared to traditional mouse monoclonals or rabbit polyclonals.
• ZytoVisionminorChannel Partner/ Reseller/ DistributorDistribution partnership for ZytoVision Probes & Reagents for FISH (Fluorescence In Situ Hybridization) testing, expanding Cell Marque's product portfolio into molecular diagnostics and providing comprehensive solutions for the clinical laboratory.
• Sigma-AldrichcoreOthersCell Marque operates as a Sigma-Aldrich company and products are sold through the Sigma-Aldrich catalog and distribution network. Terms and conditions for orders are governed through MilliporeSigma's systems.

Scale indicators3 records

Recent moves7 records

Expansion highlights6 records

Emerging players

• Biocare Medical: Biocare Medical is a specialty IHC reagent and automated staining company focused on clinical pathology, offering IVD antibodies and detection kits that compete with Cell Marque in niche oncology and hematopathology markers.
• Genemed Biotechnologies: Genemed is a niche IHC antibody and reagent supplier focused on clinical pathology, offering IVD-grade primary antibodies that overlap with Cell Marque's portfolio in mid-sized pathology labs.

Direct peers

• Dako (Agilent Technologies): Dako is the closest direct competitor in clinical IHC primary antibodies, detection systems, and automated staining platforms (Dako Omnis). Agilent's pathology solutions compete head-on with Cell Marque across the same clinical lab customer base.
• Roche Diagnostics (Ventana): Roche's Ventana Medical Systems division sells the BenchMark series of IHC stainers and a comprehensive IHC reagent portfolio, serving the same hospital pathology labs. It is the dominant integrated IHC workflow competitor.
• Abcam: Abcam is both a technology partner (RabMAb co-branding) and a competing supplier of high-quality research and diagnostic antibodies, including rabbit monoclonals used in IHC. Recently part of Danaher, it represents both a collaboration and competitive overlap.
• Leica Biosystems: Leica Biosystems (part of Danaher) offers the BOND-III automated stainer and a broad IHC primary antibody catalog. It is a direct competitor in both reagents and instruments for histopathology laboratories.

Regional players

• Sakura Finetek: Sakura Finetek specializes in histology and pathology instruments (e.g., Tissue-Tek) with strong APAC presence, providing overlapping workflow products for IHC laboratories that complement or compete with Cell Marque's Midas stainer.

Broad incumbents

• Bio-Rad Laboratories: Bio-Rad offers IHC and life science research antibodies alongside a much broader diagnostics and research reagents portfolio, competing with Cell Marque in selected antibody categories from a larger diversified base.
• Revvity (formerly PerkinElmer Life Sciences): Revvity supplies life science reagents, antibodies, and diagnostic tools (including IHC-adjacent products) through its Life Sciences segment, competing with Cell Marque in research and translational pathology applications.
• Thermo Fisher Scientific (Invitrogen + Anatomical Pathology): Thermo Fisher supplies IHC and histology reagents, instruments, and antibodies through its Life Sciences and Anatomical Pathology businesses, overlapping with Cell Marque in primary antibodies and ancillary reagents.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xtwitter.com/cellmarque
• YouTubeyoutube.com/@milliporesigma2407
• Facebookfacebook.com/cellmarque
• LinkedInlinkedin.com/company/cellmarque

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cell Marque