Tracheary cells containing granules were examined using scanning electron microscope.
L. Rajanna, G. R. Shivamurthy 2001, 'Occurrence of Graniferous Tracheary Elements in the Haustorium of Cassytha filiformisLinn., A Stem Parasite of Lauraceae', Taiwaniahttp://tai2.ntu.edu.tw/taiwania/abstract.php?type=abstract&id=277. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In the central cylinder and inner cortex region peroxidase activity was localised in tracheary elements.
Hrvoje Lepeduš, Vera Cesar, Marijana Krsnik-Rasol 2004, 'Guaiacol Peroxidases in Carrot (Daucus carota L.) Root', Food Technology and Biotechnologyhttp://hrcak.srce.hr/file/163149. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)