Student Project Figures Figure 36 Masson's Trichrome in this slide revealed the presence of muscle fibers (collagen, in blue) in what appears to be sections of the pnematophore where contraction occurs. A, B and C indicate the presence of blue colour at different intensities (from lowest to highest). 500-pixel scale bar = 100 um. Figure 32 Figure 33 Figure 34 Figure 35 Figure 36