CD40LG and toxoplasmosis: Initially, we have generated protein microarray chips containing 2870 candidate exon products of T. gondii. Then, we probed them with well grouped human sera [(i) acute (IgM- positive and low avidity IgG); (ii) chronic with IgM persistence (IgM-positive and high avidity IgG); (iii) chronic (IgM-negative and high avidity IgG); and toxoplasmosis negative] [15, 16].