Research Article

Focal Point Theory Models for Dissecting Dynamic Duality Problems of Microbial Infections

Figure 4

The duality relationship between Sym (αi) and Pat (βi). A cooperative relationship (NP-NS: health and mutualism) (I) occurs between the host and the NP microbial community. A competitive relationship (CP-CS) (II and III) exists between the host and the CP microbial community. There are two types of competitions: better (II) and worse (III). An antagonistic relationship (UP-US) (IV) occurs between the host and the UP microbial community.
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