Plate P5. Cell walls transitional to suberinite. 2. T5809; Hole 1109D; 387.86 mbsf. Same as figure 1, but in fluorescence mode. In the upper right of the field the regular stacked structure normally associated with suberinite is present, but in other parts of the field is it lacking, but the cell walls show similar fluorescence properties (reflected light; field width = 0.22 mm; vitrinite reflectance [cell contents] = 0.31%).