Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Oct 23;13(10):e1006682. doi: 10.1371/journal.ppat.1006682

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2017 Wu et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

PMC Copyright notice

Fig 1 — (A) Frequency of different amino acids observed at HA residue 194 of human H3N2 isolates. Egg: isolates that were sequenced after passaging in egg. Unpassaged: isolates that were sequenced without passaging. (B) Egg-passaged human H3N2 isolates are categorized based on the number of passage. The fractions of isolates in different number of passage that possess a Pro at residue 194 are shown. Error bars represent the standard error estimated from a binomial distribution. (C) Frequency of different amino acids observed at HA residue 194 of pandemic H1N1 (“swine influenza”) human isolates. Egg: isolates that were sequenced after passaging in egg. Unpassaged: isolates that were sequenced without passaging. Of note, no sequence information was found for unpassaged isolates in 2013. (D) Cα traces of the HA structures of Bris07 P194 (blue) and L194 (green) are aligned and compared.

HHS Vulnerability Disclosure