142M471B3J 4 Carbon Dioxide 4 Journal Article 4 tunable diode laser absorption spectroscopy 4 7440-44-0 3 Carbon 3 Research Support, U.S. Gov't, Non-P.H.S. 3 mehr ... C4 photosynthesis 2 CO2 efflux 2 Research Support, Non-U.S. Gov't 2 carbon isotope discrimination 2 internally transported CO2 2 photosynthetic efficiency 2 xylem-transported CO2 2 Amaranthus hypochondriacus 1 Bienertia sinuspersici 1 Brassica napus 1 CO2 leakiness 1 Carbon Isotopes 1 Kranz anatomy 1 Oxygen 1 Populus deltoides 1 S88TT14065 1 bundle-sheath leakage 1 leaf photosynthesis models 1 maize 1 photosynthetic induction 1 single-cell C4 photosynthesis 1 sorghum 1 stem [CO2*] 1 weniger ...