THE average physician confronted with the subject of porphyrin metabolism pictures either a bewilderingly complex group of strange pigments obtained from stools and urine or an exceedingly rare ...

Micronutrients (those needed in smaller amounts) include vitamins and minerals. Every nutrient has unique functions. Deficiencies in a specific vitamin or mineral, for example, increase the risk of ...

Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K. Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nám. 542 ...

Technical University of Munich, TUM School of Natural Sciences, Physics Department E20, Garching 85748, Germany ...