Multiple choice

S3 stands for pneumococcus polysaccharide SIII. In a lymph node, the antigen pneumococcus polysaccharide SIII causes

  1. lymphocyte proliferation in the paracortex

  2. PALS development

  3. proliferation in cortical lymphoid follicles

  4. development of cellular hypersensitivity

  5. the absence of germinal centers

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Stimulation of antibody-formation by this thymus-independent antigen leads to proliferation in this location with development of germinal centers while the paracortical region remains inactive, reflecting the inability to develop cellular hypersensitivity to the polysaccharide.