A child stung by a bee experiences respiratory distress within minutes and lapses into unconsciousness. This reaction is probably mediated by()
A: IgE antibody
B: IgG antibody
C: sensitized T cells
D: complement
E: IgM antibody
A: IgE antibody
B: IgG antibody
C: sensitized T cells
D: complement
E: IgM antibody
举一反三
- Which of the following isotype of antibody has the largest molecular<br/>weight?() A: IgM B: IgG C: IgA D: IgE E: IgD
- Communication between cells is mediated by cell signaling molecules and ( ). A: Cell receptor B: Antibody C: Enzyme D: Electric signal
- PCR is used to detect ( ) A: Antigen B: Antibody C: DNA or RNA D: Complement
- The patient, male, 30 years old, was found HIV antibody positive in physical examination. Which kind of cells in his body is most significantly reduced A: CD4 + T cells B: CD8 + T cells C: B cells D: NK cells E: Monocytes
- 名词解释:抗体 (Antibody,Ab)