There are two kinds of conducting elements (i.e., transport tubes) found in the xylem: 1) tracheids and 2) vessels (Figure 6). Tracheids are smaller than vessels in both diameter and length ...
MacMillan also identifies two rare conditions, achalasia and tylosis, which can increase the likelihood of developing this cancer. To help reduce your risk of oesophageal cancer, the NHS advises ...
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