Fig. 5. Fatty acid composition of various syngens. P. aurelia syngens, 2, 3, 8 and 10 were cultured at either 20°C or 30°C. Fatty acids extracted from whole cells were analyzed by HPLC as described in Materials and methods. The fatty acids are denoted by the convention C with the ratio of the number of carbon atoms to the number of unsaturated linkages. (A) Syngen 2. (B) Syngen 3. (C) Syngen 8. (D) Syngen 10. Key indicates culture temperature. Values are the mean ± s.d. (N=3-6 experiments).