An example of an antigen that could stimulate naïve B-cell proliferation and differentiation without the help of a T cell would be a(n):
A) lipopolysaccharide molecule from Proteus vulgaris
B) plasmid DNA molecule from Yersinia pestis
C) protein A molecule from Staphylococcus aureus
D) anthrax toxin molecule from Bacillus anthracis
E) porin protein molecule from Escherichia coli

Question

Quizplus · Accepted Answer

Lipopolysaccharides (LPS) are strong immunostimulatory molecules and are known to directly stimulate naïve B cells without T cell help. Proteus vulgaris is a gram-negative bacterium that produces LPS.

The other options do not typically stimulate the immune system in the same way as LPS and would generally require T-cell help for B-cell proliferation and differentiation.

An Example of an Antigen That Could Stimulate Naïve B-Cell