CD40LG and neuroblastoma: In NB, diagnostic markers of congenital toxoplasmosis showed a low sensitivity (IgM specific, 38.5%; IgA specific, 20.4%; and identification of T. gondii, 31.7%), smaller than that found by Bessieres et al. in 2009 [75], 64% (IgM) and 53% (IgA) Gilbert et al., [76], 52% (IgM) and 55% (IgA) and Pinon et al. [77], of 56.7%, in relation to serological markers.