Fig. 3From: circGPA: circRNA functional annotation based on probability-generating functionsThe generating polynomial of the mRNAs in this graph is equal to \(2x^4 + 3x^5 + 4x^6 + x^7\). We see that there are two ways to annotate 3 mRNAs, so that there are 4 paths that end in an annotated mRNA. These two cases are illustrated in the figure, the paths are marked by bold grayBack to article page