The primary female to lead a Central American country, she served from the nineteen nineties once the country were shaken by political strife. Hemagglutinin inhibition (HI) assay: The Hello assay checks for antibodies on the hemagglutinin of the particular influenza virus using crimson blood cells (RBC). Various kinds of RBCs https://www.dailypioneer.com/2015/avenues/go-global.html