E. Davis

The in vitro conversion of bile pigments to the urobilinoids by a rat clostridia species as compared with the human fecal flora. 3. Natural d-urobilin, synthetic i-urobilin, and synthetic i-urobilinogen.

Z. Petryka, D. Lightner, C. J. Watson, 1970, Biochemical medicine.

The in vitro conversion of bile pigments to the urobilinoids by a rat Clostridia species as compared with the human fecal flora: II. Mesobilirubin and dihydromesobilirubin

Z. Petryka, D. Lightner, C. J. Watson, 1969 .

A new method of interpretation of the ferric chloride oxidation patterns of the urobilinoids.

Z. Petryka, D. Lightner, C. J. Watson, 1969, Archives of biochemistry and biophysics.

Mass spectrometry and ferric chloride oxidation applied to urobilinoid structures.

Z. Petryka, D. Lightner, C. J. Watson, 1969, Archives of biochemistry and biophysics.

A natural crystalline urobilinogen composed of d- and l-components of differing molecular weight.

Z. Petryka, D. Lightner, C. J. Watson, 1968, Proceedings of the National Academy of Sciences of the United States of America.

On the existence and structure of a stable mesobiliviolin of molecular weight 590

Z. Petryka, D. Lightner, C. J. Watson, 1968 .

On the existence and structure of a new urobilin of molecular weight 592.

Z. Petryka, D. Lightner, C. J. Watson, 1967, Proceedings of the National Academy of Sciences of the United States of America.

Studies of the affinity of nuclear material for uroporphyrin. 3. Histones, nucleic acids, and bases.

Z. Petryka, C. J. Watson, A. Moscowitz, 1970, Biochemical medicine.