title: THE CHLOROPHYLL UNIT IN PHOTOSYNTHESIS.
abstract: In six species of plants, representing four phyla, the minimum number of chlorophyll molecules present for each molecule of carbon dioxide reduced appears to lie between 2,000 and 3,000. This finding suggests the existence of a chlorophyll unit.
authors.affiliation: Laboratory of General Physiology, Harvard University, Cambridge.
authors.forename: W
authors.initials: W
authors.lastname: Arnold
authors.forename: H I
authors.initials: HI
authors.lastname: Kohn