Figure 11.4. Phylogeny of influenza isolates based on nucleotide sequences from the HA1 region of the hemagglutinin (HA) gene.

Figure 11.4

Phylogeny of influenza isolates based on nucleotide sequences from the HA1 region of the hemagglutinin (HA) gene. The isolates were obtained from swine (sw), turkey (ty), and duck (dk). The avian isolates were closer to the swine isolates on the right (avian-like swine) than to the swine isolates on the left when measured by nucleotide distances (data not shown). The matrix above the tree shows the intensity of reaction for each isolate to eight monoclonal antibodies. Darker patterns correspond to stronger reactions. All data from Brown et al. (1997).

From: Chapter 11, Classifications by Antigenicity and Phylogeny

Cover of Immunology and Evolution of Infectious Disease
Immunology and Evolution of Infectious Disease.
Frank SA.
Princeton (NJ): Princeton University Press; 2002.
Copyright © 2002, Steven A Frank.

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