For instance, to improve drug activation at ring stage, we can explore enhancing the level of haem biosynthesis in the parasite. (sciencedaily.com)
If your baby is following a vegetarian diet, make sure that you serve him plenty of iron rich foods, along with foods rich in vitamin C — this converts non haem iron into a form more easily used by the body. (homemade-baby-food-recipes.com)
Some chemists, including Albert Eschenmoser at the University of Zurich, think that molecules based on the corrin ring system of vitamin B12 could be older in evolutionary terms than the porphyrin - based ring systems in haem and chlorophyll. (newscientist.com)