Macrophage-like immune cells found in the brain are called ______ and in the liver they are called ______.

Of the physical barriers of the human body, the skin barrier is more vulnerable than the mucosal barrier.

Which two regulatory proteins work together to cleave C3b into iC3b in order to avoid the formation of the C3 convertase?

Like B-cells that secrete their BCR’s, T-cells can also secrete their TCR’s.

Inflammation only results due to infections caused by pathogens.

The classical complement cascade can only be activated after antibodies bind to a pathogen.

Mature T and B cells can travel through

An organism that can cause disease when the host immune defenses are weak or when it establishes somewhere in the body it is not commonly found is called:

Which lymphocyte is considered a large granular lymphocyte?

Edward Jenner created the first vaccine against a disease. He used the cowpox virus to create a vaccine that would provide protection against the smallpox virus.