Figure 12. SEM micrograph of Ceiba pentandra wood: a) Radial section, and b) Ray parenchyma showing simple and semi-border pits

From

Some Promising Hardwoods for Cellulose Production: I. Chemical and Anatomical Features

Sherif S. Z. Hindi

Nanoscience and Nanotechnology Research. 2017, 4(3), 86-97 doi:10.12691/nnr-4-3-2