Blog

August 30, 2021

By: douano@listlabs.com

By: Rachel Berlin, Marketing Manager List Labs currently has a GMP compliant version of HPT™ Lipopolysaccharide from Escherichia coli O113 in stock. What this means for you: You don’t need to buy an entire batch of lipopolysaccharide or wait months for production and release – Saves you valuable time Paying for as few as 50 vials of […]

October 21, 2020

By: List Labs

The purity of your recombinant proteins is critical to the success of your research. A number of contaminants can affect both in vitro and in vivo systems. Some of the results are predictable, but others are not. All can affect your experimental data. This article will focus on one of the most common contaminants: endotoxins […]

July 23, 2018

By: douano@listlabs.com

By: Mary N. Wessling, Ph.D. ELS In this blog we will unravel the terminology describing bacterial toxins. In general, there are at least three ways that bacterial toxins are described in the literature: by their biological designation—the genus and/or species from which they come by the origin of the toxin, either as innate to the […]

July 11, 2018

By: douano@listlabs.com

By: Karen Crawford, PhD. President, List Labs Staphylococcal enterotoxin type B (SEB) is a powerful player in the family of toxins; in scientific terms, a superantigen.  This enterotoxin binds to major histocompatibility complex (MHC) class II molecules on antigen-presenting cells and specific V-β chains of the T-cell receptors.  This interaction between the three molecules leads […]

January 8, 2018

By: douano@listlabs.com

By: Rachel Berlin, Marketing Manager The List Labs website hosts a library of scientific article abstracts related to the research performed using our products called the Citations Page. Visitors can search this library to learn how others have used List Labs’ reagents in their research. This valuable resource is updated monthly with new articles from a wide variety […]

August 29, 2017

By: dpinkston@listlabs.com

The origin of businesses is often an interesting story. List Biological Laboratories is no exception. The company was founded in 1978 by Linda Shoer. Linda was an entrepreneurial scientist in Silicon Valley, who’d been relocated with her husband from Boston. She had an idea for a company and leveraged an initial order into a loan […]

March 6, 2017

By: douano@listlabs.com

By: Md. Elias, Ph.D, Senior Scientist What are Endotoxins? Endotoxins (aka lipopolysaccharide, LPS or lipoglycan) are part of the outer membrane of Gram-negative bacteria consisting of a lipid moiety and a polysaccharide moiety, the latter is composed of an inner core, outer core and O-antigen joined by covalent bonds1. In animals the lipid part of […]

August 15, 2016

By: douano@listlabs.com

By: Md. Elias, Ph.D, Senior Scientist List Labs is one of the leading manufacturers of high quality adjuvants from bacterial sources. Our highly purified adjuvants for research and development are Tetanus Toxoid (Product #191), Cholera Toxin B Subunit (Product #104), Diphtheria Toxin CRM197 Mutant (Product #149), Adenylate Cyclase Mutant, Cya-AC– (Product #198L), Pertusis Toxin Mutant (Product #184), […]

June 22, 2015

By: douano@listlabs.com

By: Karen Crawford, Ph.D., President Eva Purro, Director of Quality Assurance Dom C. Ouano, Marketing While most of List Labs’ products are intended as research reagents (Research Grade), several can be produced as GMP products for use in humans. Below are key differences between the two. Research Only VS Preclinical/Clinical/Human Use Reagent grade products for […]

March 16, 2015

By: List Labs

By: Suzanne Canada, Ph.D. Tanager Medical Writing While you go about your day, you are surrounded by micro-organisms.  Although most of us spend a lot of time washing up and trying not to think about the propensity of creatures that share our personal space, scientists have been studying them.  Due to their great progress, we […]

December 15, 2014

By: douano@listlabs.com

By: Karen Crawford, Ph.D. President, List Biological Laboratories, Inc.   Many bacterial products are potent immune system activators, helping our bodies identify and defend against microbial invasions.  The innate immune system or non-specific immune system is found in animals as well as in plants, fungi and insects and is employed when pathogens break through the […]

June 17, 2014

By: dpinkston@listlabs.com

What is Lipopolysaccharide? Lipopolysaccharide (LPS), a component of the outer membrane of Gram-negative bacteria, is a potent stimulator of the vertebrate innate immune system.  This innate immune system, mediated by macrophages and dendritic cells, generates a rapid response to infectious agents.  Structural patterns common to diverse LPS molecules are recognized by Toll-like receptors (TLR) and […]