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. 2020 Mar 20;11:381. doi: 10.3389/fmicb.2020.00381

TABLE 2.

Mean productivity of a virus (A), which encounters a second virus (B) with probability pB—A, depending on the presence or absence of mutually targeting CRISPR arrays.

Anti-A spacer in virus B
+
Anti-B spacer in virus A: + (1-cA)(1-pB|A + qApB|A) 1-cA
1-pB|A 1−(1−wA)pB|A