• Arthur C. Giese


Hypericism is a state of sensitivity to sunlight following ingestion of plants containing a pigment (hypericin) that is transferred by the bloodstream to the skin. It is mainly a disease of range animals such as sheep, cattle, and horses, but is also found in goats and swine. In the laboratory it can be induced in rabbits, rats, mice, and guinea pigs fed a diet containing the plant pigment mixed with their normal food.


Hypericum Perforatum Bluish Pigment Plant Pigment Natural Pigment Photodynamic Action 
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Arthur C. Giese
    • 1
  1. 1.Department of Biological SciencesStanford UniversityStanfordUSA

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