Immunity: Chapter 08, Specialized Lymphocytes in Early Responses and Homeostasis

Which of the following are characteristics of natural antibody produced by B1 cells?

	a)	Production in the absence of infection.
	b)	Broad deployment of VH gene segments.
	c)	Negligible junctional diversity.
	d)	Importance in defense against S. pneumoniae and influenza virus.
CorrectWrong: a, c and d are correct.Your answer has been saved.

Which of the following statements are true?

	a)	B1 cells protect from antigens entering the body primarily from lung or gut.
	b)	Antibodies produced by B1 cells recognize repeating epitopes.
	c)	IgA and IgG are produced by B1 cells with T cell help.
	d)	CXCR5 guides B1 cells to B cell follicles.
	e)	Recognition of self antigens is essential for the development of B1 cells.
	f)	B1 cells express low levels of membrane IgM.
CorrectIncorrrect: a b e and g are true.Your answer has been saved.

Which of the following self antigens recognized by B cells is/are known to be chemically similar to a component of some bacterial cell walls?

	a)	Smith antigen (snRNP)
	b)	Thy-1
	c)	phosphatidylcholine
	d)	mouse red blood cell antigen
CorrectWrong: c is correct.Your answer has been saved.