In addition, despite the overall similarity in the modulation of core 2 synthases gene expression between RVC and G9P[13], only the latter significantly upregulated the expression of GCNT1. In contrast, the expression of none of glycosyltransferase-encoding genes responsible for glycan core biosynthesis was significantly changed by G5P[7] infection. The gene discussed is KIR2DL4; the disease is infection.