Coto Montes A, Boga J, Tomas Zapico C, Rodríguez Colunga M, Martínez Fraga J, Tolivia Cadrecha D, et al. Porphyric enzymes in hamster Harderian gland, a model of damage by porphyrins and their precursors. A chronobiological study on the role of sex differences. Chem Biol Interact. 2001;134:135-49 pubmed
..These data are in agreement with morphological observations demonstrating particularly severe cell damage in the female HG under normal conditions. ..
Coto Montes A, Tomas Zapico C, Rodríguez Colunga M, Tolivia Cadrecha D, Martínez Fraga J, Hardeland R, et al. Effects of the circadian mutation 'tau' on the Harderian glands of Syrian hamsters. J Cell Biochem. 2001;83:426-34 pubmed
..Our data are not only in accordance with findings on protective effects by melatonin, but also with our earlier observation made in Drosophila that perturbations in the circadian system lead to increased oxidative stress. ..