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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: Methods Mol Biol. 2018;1836:261–279. doi: 10.1007/978-1-4939-8678-1_13

Figure 4.

Figure 4

Western blot probed with antibodies against influenza HA. The amount of HA in the viral sample was estimated by comparing with HA standards. We also noted that a small fraction of uncleaved HA0 was present in the influenza virus specimen.