Figure 1From: Discrete derivative: a data slicing algorithm for exploration of sharing biological networks between rheumatoid arthritis and coronary heart disease Wheel Shaped Network on Frequency 19. This network is constructed with data set downloaded from PubMed on May 9, 2010. It is built under the condition that any two nodes connected with each other by an edge are DescriptorName pairs on the co-occurrent frequency of "19".Back to article page