id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cord-003639-bjtxf1y8	Vahey, Michael D	Influenza A virus surface proteins are organized to help penetrate host mucus	2019-05-14		.txt	text/plain	9673	271	33	To quantify alignment between the HA-NA axis of a virus particle and the direction of its displacement from the associated ECL track ( Figure 4E ), fluorescent images of HA, NA, and ECL were segmented in both HA (to identify virus particles) and ECL (to identify regions of cleaved sialic acid) channels. Polarized viruses step persistently away from their NA-rich pole To directly test how NA polarization might affect virus motion, we characterized interactions between fluorescently-labeled viruses and sialic acid coated coverslips, where the well-defined geometry and density of sialic acid allow straightforward analysis of virus diffusion (Materials and methods) (Figure 2A ).	cache/cord-003639-bjtxf1y8.txt	txt/cord-003639-bjtxf1y8.txt
