Original sentence: An example of the location of the tannins in the stem tissue is that they are often found in the growth areas of trees, such as the secondary phloem and xylem and the layer between the cortex and epidermis.However, there may be a loss in the bioavailability of tannins in plants due to birds, pests, and other pathogens.In terms of location of the tannins in a plant, they are mainly located in the vacuoles or surface wax of the plants.Tannins are distributed all over the plant kingdom.These sites are where tannins do not interfere with plant metabolism, and it is only after cell breakdown and death that the tannins are active in metabolic effects
Edited sentence: An example of the location of the tannins in stem tissue is that they are often found in the growth areas of trees, such as the secondary phloem and xylem and the layer between the cortex and epidermis.Histologically tannins are mainly physically located in the vacuoles or surface wax of plants.Tannins are distributed in species throughout the plant kingdom.There may be a loss in the bioavailability of still other tannins in plants due to birds, pests, and other pathogens.These storage sites keep tannins active against plant preditors, but also keep some tannins from affecting plant metabolism while the plant tissue is alive; it is only after cell breakdown and death that the tannins are active in metabolic effects