Mentally distressed woman warned cops of suicide: Drives auto on rail tracks for 7km near Hyderabad; observe Hemagglutinin inhibition (Hello) assay: The HI assay tests for antibodies to the hemagglutinin of the precise influenza virus working with purple blood cells (RBC). Several kinds of RBCs were assessed during the Hello https://www.dailypioneer.com/2018/avenues/2018-01-16-204104.html