Scanning electron microscope image of cross-section through a Psidium guajava stem. The image shows the thin outer epidermal layer with a thick layer of cortex beneath. The vascular area consists of a secondary phloem and primary xylem, with vascular cambium in between. The central pith has some mucilage present. This image is part of a group on botanical stems (CIL:40378-40395).
Image collected on a Zeiss DSM 962 SEM. Complete specimen preparation protocol available at: http://remf.dartmouth.edu:8080/EM-Wiki/36
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