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Fig. 2. School-specific responses of P. lineatus to skin mucus (A,B) and
PC (C,D) obtained from schools A (SA) and B (SB). (A) Response of SA to skin
mucus; (B) Response of SB to skin mucus; (C) Response of SA to PC; (D)
Response of SB to PC. Sample combinations tested are school A vs
solvent control (SA-C), school B vs solvent control (SB-C), school A
vs school B (SA-SB), and solvent control vs solvent control
(C-C). Asterisks indicate a significant difference at P<0.05
(two-sample t-test).