Fig. 4

Bubble diagrams of Kyoto encyclopaedia of genes and genomes (KEGG) pathway enrichment for the differentially expressed proteins (DEPs) between the normal and abortive group. (a) Bubble diagram demonstrates that the up-regulated DEPs participate in relaxin signal, protein metabolism and defend against pathogens; (b) Bubble diagram indicates that the down-regulated DEPs take parts in amino acid degradation, glycometabolism, lipid metabolism and redox balance