Irmgard Ziegler

Regulation of melanin biosynthesis in the human epidermis by tetrahydrobiopterin.

M. Pittelkow, W. Rödl, J. Wood, 1994, Science.

Defective tetrahydrobiopterin and catecholamine biosynthesis in the depigmentation disorder vitiligo.

M. Pittelkow, J. Wood, K. Schallreuter, 1994, Biochimica et biophysica acta.

Coordinate induction of tetrahydrobiopterin synthesis and nitric oxide synthase activity in chicken macrophages: upregulation of GTP-cyclohydrolase I activity.

B. Kaspers, I. Ziegler, U. Lösch, 1997, Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology.