Fig. 4From: Characterization of serum protein expression profiles in the early sarcopenia older adults with low grip strength: a cross-sectional studyPPI networks revealed the key proteins. A PPI network diagram, each dot in the network represented a protein, and the more segments connected with the dot, the more important this protein was in the network structure; B The top 9 proteins with higher degree in PPI network screened by MNC algorithm. The darker the red color, the higher the degreeBack to article page