Complete cross-section of the root stained with Alcian blue-safranin and observed with the objective of 4x. We can distinguish the epidermis, the cortex, the vascular cylinder (formed by phloem and xylem), and the medullar parenchyma, more internally located. The endodermis is also observed, separating the cortex and the medulla. Details of the zones framed in red (medulla) and blue (cortex) are offered at higher magnification in other microphotographies