11. PPAR? may function as an integrator of epidermal cell proliferation, and glucose and lipid metabolism. 12. Chloroplasts are generally absent in epidermal cells , the exception being the guard cells of the stomata. 13. They are unicellular and formed by the outgrowth of a single epidermal cell ( trichogen ). 14. In this case bacteria penetrate the root extracellularly, growing between epidermal cells then between cortical cells. 15. The " runner hyphae " are individual, superficial fungal strands following the depressions between epidermal cells . 16. This gradient transforms with distance into increasing lag phases for the pressure-induced depolarization in the epidermal cells . 17. The upper epidermal cells appear to remain relatively normal as well, as hyphal growth goes below this layer. 18. It consists of lipid and hydrocarbon polymers impregnated with wax, and is synthesized exclusively by the epidermal cells . 19. These antibodies appear as IgG deposits along the desmosomes between epidermal cells , a pattern reminiscent of chicken wire. 20. The epidermal cells are the most numerous, largest, and least specialized and form the majority of the epidermis.
