MLC1 and measles: While anti-measles VL dIgA reactivity was observed in all measles samples on both in-house plates precoated with measles virus (Edmonston strain) lysate (Zeptometrix, NY, USA) and the commercial measles IgM precoated antigen plate (Euroimmun), the absorbance values were significantly higher in assays run on the in-house antigen plates (Wilcoxon, P < 0.0001).