The "Open Window" Theory of exercise and vulnerability to illness is based on all of the following observations, except: Group of answer choices Decreased Natural Killer Cell numbers and activity Decreased nasal and salivary IgA Increased cytokines Increased T-cell numbers and function

Discuss the sequential steps of innate immune system activation in response to SARS-COV-2 infection with respect to the following parameters: Primary host tissue targets and receptors. Host PRRs. Parameters of interferon activation. Role of neutrophils, macrophages. ILCs and inflammasomes in the innate immune response. Soluble inflammatory factors and biomarkers linked to the "cytokine storm". Differences in the innate immune cell compartment in early versus late-stage disease in mild versus serious cases of COVID-19.

List the three main ways to prevent or short-circuit type I allergic reactions.

Identify commonalities and differences between type II and type III hypersensitivities.

What is an example of positive defensive medicine?

All of the following statements concerning regulatory T cells (Treg) are correct, EXCEPT: The regulatory cytokines produced by regulatory T cells are IL-12 and TGF-B O Thymocytes that recognize self-antigen in the thymus with a certain affinity become natural (central) regulatory T cells O In the periphery T cells that recognize self-antigen in the presence of TGF-B become induced regulatory T cells O A Treg cell can suppress self-reactive lymphocytes that recognize peptides different from that recognized itself provided that the peptides are derived from the same tissue O A Treg cell can suppress self-reactive lymphocytes that recognize peptides different from that recognized by itself provided that the peptides are presented by the same antigen-presenting cell (APC)

Describe at least three physical mechanisms that are part of the first line of defense.

Describe about the role of mast cells and basophils in allergy.

If you come down with the flu, your body will launch an immune attack against the flu virus. During the recognition phase of the adaptive immune response: a   an antigen of the virus will be presented by an antigen-presenting cell and be recognized by T-helper cells b   B cells will recognize the viral particles and produce antibodies against them c   cytotoxic T cells will recognize the virus-infected cells and kill them d   antibodies will recognize the viral antigens, bind to them, and attract phagocytes e   a T-helper cell will recognize the viral antigen and stimulate B cells and cytotoxic T cells to divide

Name one of the thymic hormones that help direct the maturation and specialization of T cells.