The cells of the immune system are the guardians of these organisms – able to distinguish friend from foe and self from nonself. To accomplish this task in an organism with perhaps trillions of cells, ...

We show how the immune system would normally attempt to neutralize virus particles and how CoV-2 can block that effort. We explain some of the virus's surprising abilities, such as its capacity to ...

The Langerhans cells then travel to the lymph nodes and alert the immune system to trigger the immune response because a pathogen is in the body. Lymph nodes are small organs located throughout ...