Figure 1From: Comparison of gene expression of Paramecium bursaria with and without Chlorella variabilissymbiontsVenn diagram showing the number of orthologous gene clusters shared among three organisms: P. bursaria (A), P. tetraurelia (B), and T. thermophila (C). Protein coding sequences from the three organisms were grouped into orthologous gene clusters using OrthoMCL [26].Back to article page