THelper cells activate macrophages, assist B-cell processes, and help activate cytotoxic T cells.

A protein fingerprint of a patient’s blood sample can be created by adding the sample to a metal plate and striking it with a laser. This causes the sample to become ionized and the ions from the sample are guided into a machine that separates them and identifies them according to their mass-to-charge ratio.  This process describes ________.

When minute samples of DNA need to be genetically analyzed for identification purposes, which test can be effectively used?

In precipitation tests, the antigen ________.

An example of artificial active immunity would be ________.

T cells have a MHC class II receptor but lack MHC class I receptors.

Over 300 CD cell surface identification markers have been discovered.

A secondary acquired immunodeficiency is ________.

Food allergies include gastrointestinal symptoms and often hives.

All antigens are immunogens.