Graphical representation of anti-RESA antibody profiles in three groups obtained by non-hierarchical cluster analysis. Each row represents the children’s responses to one antigen: P1 to P6 synthetic peptides; rRESA-1B and rRESA-3B recombinant proteins. In columns are pictures of the responses against the different antigens for one child. Thus each rectangle at the intersection between rows and columns represents the response against one antigen for one child. A dark grey box represents a positive response and a light grey box a negative one.