Harder gland 4 article 4 male 4 ARMADILLO 3 GLANDULA DE HARDER 3 GLANDULA LACRIMAL 3 GLANDULA NICTITANTE 3 HARDERIAN GLANDS 3 LACRIMAL GLANDS 3 MELATONIN 3 MELATONINA 3 NICTITATING GLANDS 3 NUCLEO DE ONUF 3 ONUF'S NUCLEUS 3 5,5' dithiobis(2 nitrobenzoic acid) 2 Animals 2 Armadillos 2 Cysteine residue(s) 2 Female 2 Harderian Gland 2 Intracellular Membranes 2 Male 2 Microscopy, Electron 2 Porphobilinogen deaminase 2 Porphobilinogen deaminase regulation 2 Protoporphyrin IX 2 Rat harderian gland 2 animal 2 animal tissue 2 armadillo 2