In cross-section of a pine stem what are secretory cells?

In the cross-section of a pine stem, secretory cells are specialized cells that produce and store various substances, such as resins and oils. These cells play a crucial role in the plant's defense mechanisms, helping to deter herbivores and protect against pathogens. Resins can also help seal wounds, preventing water loss and further injury to the plant. Typically, these secretory cells are found in the phloem or parenchyma tissue of the stem.