Fourie, P.J.J.; Du Toit, P.J.
(Pretoria : The Government Printer, 1943)
A Shorthorn bull 7597 remotely related to a porphyrin carrier (Dr) bull
(7015) and showing skin lesions of photosensitization from calfhood, was
bred to two cows suffering from congenital porphyrinuria (pink tooth). ...