Hesselink J W, Vellema P
Tijdschr Diergeneeskd. 1990 Sep 1;115(17):789-94.
In a flock of thirty lambs ten animals showed symptoms of photosensitisation within a short period of time. Soon after treatment with vitamin B12 the symptoms disappeared. Clinical examination, differential diagnosis, treatment and course of the disease are discussed. It is assumed that the lambs suffered from 'white liver disease'.