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New Plant-based Block Minimizes Background Signal for Immunohistochemistry and Immunofluorescence

September 5, 2016

Vector Laboratories, a leader in the development and manufacture of labeling and detection reagents for biomedical research, introduces a ready-to-use (RTU) animal-free blocking agent and diluent for cell- and tissue-based immunohistochemistry (IHC) and immunofluorescence. This new plant-based block is an alternative to widely used animal-based blocks such as sera, BSA, casein and non-fat dry milk, enabling the lab to reduce the use of animal-derived reagents.

The RTU animal-free block can be used with both peroxidase and alkaline phosphatase antibody conjugates and all secondary detection reagents including polymer systems and avidin/biotin reagents that incorporate these enzymes. Because the new reagent eliminates the possibility of species cross-reactivity, the blocker can be used in multiple labeling IHC applications. The new block was designed using optimal conditions and neutral pH specificity.

“This new animal-free block was developed in response to customer demand,” explains Craig Pow, Ph.D., director of technical services for Vector Laboratories. “The ready-to-use aspect of the product is especially important, as investigators continuously look for ways to streamline workflows.”

About Vector Laboratories

Vector Laboratories empowers scientific advances with innovative proteomic and glycomic solutions. Supporting industries worldwide for 45 years and counting, Vector Laboratories is a trusted manufacturing partner with unmatched technical expertise and a culture of service. Customers rely on Vector Laboratories’ immunofluorescence, immunohistochemistry, glycobiology and bioconjugation products and custom manufacturing capabilities to move science forward, with impact. Vector Laboratories’ market-tested product portfolio provides the critical tools researchers need to precisely visualize and study tissues and cells, and to ultimately tackle today’s biggest healthcare challenges. The company’s products and technologies have been cited in more than 350,000 peer-reviewed publications and its catalog and custom products are relied upon by laboratories around the world. Headquartered in Newark, CA, Vector Laboratories includes a global network of more than 40 distributors. For more information about Vector Laboratories, please visit:

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