What is currently the best explanation for what determines whether a T cell develops into a CD8+ T cell or a CD4+ T cell?
A. CD4/TCR coengagement suppresses CD8 expression, and CD8/TCR coengagement suppresses CD4 expression.
B. T cells randomly down-regulate CD4 or CD8, and only cells that still bind the appropriate MHC will get a strong enough signal to survive.
C. CD4 or CD8 expression is determined by the strength and duration of the TCR/MHC interaction.
D. CD4 or CD8 expression is predestined in the bone marrow.
E. Only ?? T cells express CD8.
C
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Type I hypersensitivities have been called all of the following except
A) atopy. B) allergies. C) anaphylaxis. D) delayed hypersensitivities.
In immune thrombocytopenia purpura (ITP), the client has what type of disorder that primarily destroys which blood component?
A) Allergic; fibrinogen B) Alloimmune; factor VIII C) Autoimmune; platelets D) Immunoglobulin; B cells
The prefix peri- means "________."
Fill in the blank(s) with correct word
Peri-: __________
Fill in the blank(s) with correct word