July 23, 2018


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: 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 […]

March 19, 2018


By: Mary N. Wessling, Ph.D. ELS List Biological Laboratories’ (List Labs) catalog of products is related to furthering research in human health and preventing disease, most commonly as the starting materials for vaccine research & development or production around the world. Vaccines are mainly identified for their capacity to prevent diseases that the body’s innate defensive […]

January 25, 2016


SEB, superantigen of choice for positive control for cytokine detection

By: Grace Ayabe, Technical Support Would you like a positive control for production of cytokines in human peripheral blood mononuclear cells (PBMC’s)? If your laboratory is testing for cytokine production, List Labs can provide you with SEB (Staphylococcus aureus, Enterotoxin Type B) to stimulate a positive response to assure that your cells are functional. SEB […]

March 16, 2015

By: admin

List Products for Microbiome Research and Discovery

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 […]

October 21, 2014

By: admin

By: Suzanne Canada, Ph.D. Tanager Medical Writing   Vaccines have been used to help control diseases for more than 200 years and are the common practice for children and adults. Childhood vaccination has substantially reduced the morbidity and mortality from infectious diseases in much of the developed world, and influenza vaccinations have reduced the impact […]

July 28, 2014

By: admin

By: Suzanne Canada, Ph.D. Tanager Medical Writing   The world of microbial pathology is often understood as a system of various organisms who are trying to survive by using plants or animals as “hosts”. The dynamics of these systems can described the pathogen as trying to establish a living space for itself, while the “host” […]