Fig5 5 Force volume images and force plots of a synostosed sagittal and metopic suture samples. (A) Representative image of endocranial surface of a synostosed sagittal suture. (B) Representative image of ectocranial surface of a synostosed sagittal suture. (C) Representative image of endocranial surface of a synostosed metopic suture. (D) Representative image of ec- tocranial surface of a synostosed metopic suture. In each subfigure, the elastic map in the larger square was height image with colors coded to relative surface elevations, whereas smaller square contained a force-volume image mapping atomic force microscope cantilever tip-sample interactions. Force plot represents tip-sample interaction at a given ___location. In force plot, X-axis represents vertical position of piezostage on which the sample was mounted. Y-axis represents vertical position of cantilever tip relative to a vertical deflection set point. Yellow line represents interaction between cantilever tip and sample.